RFID Solution Provider in India - Suraj Informatics
A lot of terminals use RFID (Radio Frequency Identification) for the identification and tracking of people and assets. RFID Tags are placed on assets or integrated on access/ID cards, and consequently read by RFID readers when in range. The tag records can then be transferred to middleware software and to the TOS.
Valuable RFID on stations are driver and automobile identification and tracking,...
Website:
https://www.surajinformatics.com
Asset Tracking Software - WiseTrack
What Do You Want To Track?
Law Enforcement Asset Tracking
Track all of your Law Enforcement Agency assets. Critical and sensitive assets like electronics, weapons, evidence and even documents can be easily tracked and managed using WiseTrack. Save time and money using RFID to track assets Checked-Out to Officers & staff.
More info
Corporate and Government Asset Tracking
Comprehensive yet...
Website:
wisetrack.com
Related topics : tracking and asset management using rfid / asset tracking solutions using rfid / asset tracking using rfid / rfid fixed asset tracking software / free rfid asset tracking software
13.56Mhz USB RFID Reader/Writer Module - emartee.com
Video
13.56Mhz USB RFID Reader/Writer Module
RFID frequency identification is a non-contact object recognition technology, it can automaticlly recognize target and get relevant data through rf signal, so there are so many interactive projects which need to use RFID to achieve object recognition. Generally speaking, one basic kit of RFID general system mainly consists of three parts :
Tag :...
Website:
emartee.com
Related topics : rfid card reader writer usb / usb rfid reader writer / rfid reader module arduino / high frequency rfid reader module / rfid smart card reader writer
TAGSYS Enhances RFID Infrastructure for Libraries ...
TAGSYS Enhances RFID Infrastructure for Libraries
New Security System and High Value Tag Offer Best-in-Class Performance, Design Options and New Features for Improved Circulation Management
July 10, 2009 10:57 AM Eastern Daylight Time
DOYLESTOWN, Pa.--( BUSINESS WIRE )-- TAGSYS , the global leader in item-level RFID (Radio Frequency Identification) infrastructure,...
Website:
businesswire.com
RFID | Library Security
Home RFID
RFID
S A Secure are a leading provider of complete RFID Library solutions, and are partners with a wide range of leading LMS providers.
Our RFID solutions are designed to cater for the needs of the smallest school to the largest university or city...
Website:
http://www.librarysecurity.co.uk
Related topics : rfid library security / rfid library solutions / rfid solution providers / rfid security solutions / library book rfid tag
rfid implementation for libraries, library automation ...
RFID-based systems have been implemented for efficient document tracking purpose through out the libraries that combine, easier and faster charging and discharging of documents, security of materials, inventorying, stock verification and shelf handling. RFID tag's transponder listen for a radio query from the reader and respond by transmitting their unique ID code. Most RFID tags have no batteries, they use the power...
Date: 2019-04-10 23:40:41
Website:
2cqr.in
IT Asset Tracking Software - RFID Equipment Tracking System
Additionally, AssetPulse RFID IT asset tracking software enables the inventory manager to track associated data about the assets including attributes like manufacturer, model, product purchase date, warranty expiry date and so on. The system is equipped with a simple, intuitive interface to perform complex searches to facilitate business processes, for example, to be able to generate a list of...
Website:
https://www.assetpulse.com
This $10 Device Can Clone RFID-equipped Access Cards Easily
Tuesday, July 28, 2015 Swati Khandelwal
Are you the one who simply punch your wallet against a reader to get into your office? Then surely your office is using Radio-Frequency Identification (RFID) cards to manage building access and security.
However, these most common access control systems are incredibly easy to hack -- and now more than ever before. Thanks to a $10 tiny device developed by...
Date: 2017-12-09 14:00:52
Website:
thehackernews.com
Top 10 Arduino Projects 2017 | Best Engineering Projects
Here we had complied a list of top 10 Arduino Project 2017 that would be cool, useful and efficient to design in free time. Before talking about the list of 10 awesome project using arduino we would like to clear some point about arduino board.
So, what is Arduino?
Arduino is an open-source design consist a microcontroller and all the necessary circuitry on a signal board. A USB plug is given to...
Website:
https://bestengineeringprojects.com
Inmate Wristbands & ID Cards | GUARDIAN RFID
Dual electronic and visual identification to manage, monitor, and track inmates 20x more effectively and efficiently.
GUARDIAN RFID is the exclusive distributor of Clincher RFID wristbands. Clincher RFID Wristbands are non-transferable and securely worn at all times. Clincher RFID wristbands are available in 9 different colors to provide maximum flexibility and security.
Automate activity logging faster
RFID Wristbands, together with Mobile Command , help log inmate activities faster and more accurately. From meal passes and recreation offerings to programs attendance, razor passes, court transports, med passes, work release programs, and...
Website:
guardianrfid.com
Related topics : rfid wristbands / active rfid reader cost / cost of active rfid reader / active rfid uses / active rfid reader
This $10 Device Can Clone RFID-equipped Access Cards Easily
Tuesday, July 28, 2015 Swati Khandelwal
Are you the one who simply punch your wallet against a reader to get into your office? Then surely your office is using Radio-Frequency Identification (RFID) cards to manage building access and security.
However, these most common access control systems are incredibly easy to hack -- and now more than ever before. Thanks to a $10 tiny device developed by...
Date: 2017-03-03 18:19:27
Website:
thehackernews.com
Related topics : rfid card reader device / door access control system using rfid / rfid card reader frequency / rfid card reader mobile / rfid proximity card reader
Design of RFID tag antennas using an inductively coupled ...
(Show Context)
Citation Context
...(O hm ) real imagsFigure 31.sInput impedance of the simulated 915 MHz UHF RFID sshape antenna.santenna input impedance (Zant =59.7 +j96.4) is lower around 915 MHz compared tosinductively coupled feed =-=[39]-=- matching networks. Antennas designed using inductivelyscoupled feed structures yield high phase angles (i.e. Zant = 6.2 +j127). As explained in thespaper...
Website:
http://citeseer.ist.psu.edu
Radio Frequency Identification (RFID) Technology
Radio Frequency Identification (RFID) Technology
RFID system for management of nuclear materials packages in transportation and storage. Click image to enlarge.
Argonne National Laboratory has developed a radio frequency identification (RFID) technology for the management of nuclear and radioactive mat
erial packages during storage and transportation. Development of the technology involved...
Website:
http://www.ne.anl.gov
Related topics : radio frequency identification (rfid) asset tracking system / radio frequency identification device rfid technology / radio frequency identification technology (rfid) / radio frequency identification technology rfid / radio frequency identification rfid systems
Location Tracking using Wi-Fi based RFID Tags – excITingIP.com
Location Tracking using Wi-Fi based RFID Tags
Location Tracking using Wi-Fi based RFID Tags
Rajesh K o July 7, 2009 Wireless Network
This article gives an introduction to the Wi-Fi based RFID Tags, how the location of assets can be identified by the combination of Enterprise Wi-Fi and RFID technologies, what can be accomplished by such a system, advantages and limitations of Wi-Fi based RFID...
Website:
http://www.excitingip.com
Related topics : active rfid tag in real time location system / rfid tag location tracking / active rfid based asset tracking system / based active rfid tags / active rfid location tracking
RFID Blocking Wallets and Credit Card Sleeves, Protect ID
RFID Blocking Wallets and Credit Card Sleeves - Protect Your Identity
BY Beth Williams
Protection from Identity Theft �- RFID Blocking Wallets and Credit�Card�Sleeves are Now Must-Haves! What's in Your Wallet?
What's in your wallet? Identity theft continues to be the fastest growing crime in America and you need to take measures to protect your personal and financial information from...
Website:
https://www.corporatetravelsafety.com
Related topics : credit card wallet with rfid protection / credit card sleeves rfid blocking / rfid credit card wallet / rfid credit card blocking theft protection / rfid credit card blocking theft protection sleeves
What is RFID? ( Radio Frequency Identification)| RFID ...
What is RFID?
Look:
Radio Frequency (RF) technology has been around since WWII, when the Allied Forces first used it to identify friendly aircraft. Today this technology is used for mobile phones, toll tags, fuel pump key fobs, animal tracking both wild and domestic as well as many other applications.
We will discuss the use of RF in automatic identification systems, the most rapidly growing...
Website:
https://www.tracknetid.com
What Is RFID (Radio Frequency Identification) Skimming?
The Radio Frequency Identification (RFID) technology uses the radio-frequency magnetic fields to identify and track people, vehicles, and assets that carry RFID tags without the need for a direct contact.
Owing to its cost-effectiveness, the speed of operation, and the ease of use, this pervasive technology has replaced several obsolete technologies such as barcodes and magnetic swipe cards....
Website:
https://www.tripwire.com
14 Applications of RFID Technology for Sports Events ...
What is less known, however, is the way contactless technologies like Radio Frequency Identification (RFID) are being used for live sports events.
Here we explain 14 applications of RFID technology for sports to guide event managers, sports-tech companie, brands, and agencies in utilizing the technology for game-changing results.
Using RFID Technology for Sports Events
1. Access Control & Fraud...
Website:
http://engage.hashtagsports.com
RFID WRISTBAND - Best Barcode System Pvt. Ltd.
We at BBSPL offer numerous quality of material for RFID� wristbands such as PVC, Plastic, Nylon & Silicone. We offer various colors & can customize a RFID band...
Website:
http://bestbarcodeworld.com
Related topics : rfid wristbands / rfid access control events / security system using rfid / rfid security access / security using rfid
Technology to prevent baby-lifting in Tamil Nadu ...
K Elavarasan, project engineer, Reco Safety & Automation, and Bits Technology, the companies that implemented the system, explains that an RFID reader placed at the main entrance and exit points of the hospital will read the signals that the tags send out. "The tag has an RFID card in it," he explains. The card has a silicon microchip that stores information, which the reader detects upon activation.
Elavarasan explains that this information is stored in a computer...
Date: 2019-04-11 00:33:14
Website:
thehindu.com
Related topics : airport security system using rfid technology / rfid tag security system / security system using rfid / rfid card security system / companies using rfid technology
Proximity Sensors vs. Industrial RFID: Know When to Upgrade
When should I make the move from proximity sensors to industrial RFID?
It's all about the right tool for the right job. Sometimes proximity sensors are the best fit for your application. Other times, using industrial RFID is the way to go. While both proximity sensors and industrial RFID systems can accomplish the same task, it pays to know when to upgrade.
In most applications, RFID systems...
Website:
http://blog.pepperl-fuchs.us
Related topics : proximity rfid sensor / rfid sensor systems / rfid proximity security system / read write rfid tags / security system using rfid
RFID Smart Labels | NFC Smart Label Tags | System Label
System Label use a specialist insertion machine to convert a regular label into a smart label by applying an RFID or NFC tag to the rear. System Label's high speed manufacturing process and in-house design and development team, can deliver everything from small quantities of RFID and EAS labels for pilot application tests right through to larger runs of into the millions of tags per year. System...
Website:
http://www.systemlabel.com
Related topics : rfid tags and smart labels / smart labels rfid / rfid tags labels / passive rfid labels manufacturer / rfid tag reader system
RFID Asset Management | DataSpan - data storage solutions
RFID Asset Management
Radio frequency technology for security and peace of mind
Enterprise level IT and data center asset management is dramatically improved using properly configured and installed RFID technology. Traditional inventory methods generally employ paper and pencil or bar code approaches. Compared to bar code scanning, RFID based data collection asset management methods are conservatively 10 times faster or more.
In the current era of reduced IT staffing, the ability to dramatically accelerate the speed to...
Website:
http://www.dataspan.com
Related topics : rfid based asset management solution / rfid asset management solutions / rfid based asset management software / rfid based asset management / rfid for asset tracking and inventory management
Active RFID Solutions for your business | GuardRFID
The GuardRFID Active RFID platform is an all-in-one system that supports almost an infinite number of Asset and Personnel Tracking, and Security applications. GuardRFID develops and manufactures dual-frequency Active RFID Tags using the 433MHz and 125kHz bands, Active RFID network devices, and powerful, enterprise-capable middleware to locate, identify and track people, assets, and events at your...
Date: 2017-03-04 01:04:49
Website:
guardrfid.com
Related topics : active rfid tag in real time location system / active rfid tag uses / active rfid tag battery life / active tags from guard rfid solutions inc / active rfid tag frequency range
RFID-Based Security System - electronicsforu.com
A radio-frequency identification (RFID) based access-control system allows only authorised people to enter a particular area of an establishment. Authorised people are provided with unique tags, using which they can access that area. This RFID based security system is based on micro controller AT89C52 and comprises a RFID module, a LCD module for displaying the status and a relay for opening the...
Website:
electronicsforu.com
Lyngsoe Systems - About us
Subsidiary companies
The corporate headquarters of Lyngsoe Systems is located in Denmark. The headquarters comprise research & development, RFID test center, sales, hosting center, project and service facilities
Lyngsoe Systems, Inc. (est. in 1999) Sales, project and service office in Maryland, USA for servicing our customers in North America.
Lyngsoe Systems Ltd. (est. in 2001) Sales, project, RFID R&D, RFID test centre and production facility in Toronto, Canada, which is considered as one of the leading RFID innovators in the world.
Our areas of global expertise
Postal & Logistics
Increasing visibility,...
Website:
lyngsoesystems.com
Credit Card Security UK, RFID Blocking Cases
Credit Card Security takes information security and privacy very seriously. We value the trust
and confidence that you place with us to secure your personal and financial details.
Here are some of the core services we provide.
Security
The most secured way to shop, our wallets secure you against theft.
Client Support
We assist you in ensuring that you stay safe while enjoying life.
Aluminum Casing
Our RFID wallets are encased in aluminum for maximum security.
State of The Art
Our wallets...
Date: 2017-03-04 01:29:58
Website:
http://creditcardsecurity.co.uk
Related topics : rfid security credit card case / rfid credit card blocking theft protection / rfid chip credit card security / rfid secure credit card protector / credit card rfid security
RFID Tool Tracking System - gigatrak.com
RFID tool tracking systems. We use the latest software and tracking technologies to deliver solutions that meet the most demanding requirements.
RFID (radio frequency identifier) tags are small tags that can be read by wireless, non-contact readers. They are used to track and manage assets (such as computer equipment, printed documents or vehicles).
RFID tags have a number of advantages over...
Website:
gigatrak.com
RFID Systems for Wood and Paper Product Manufacturing ...
support@gaorfid.com
RFID Systems for Wood and Paper Product Manufacturing
Overseeing the manufacturing of wood and paper products involves managing a vast array of inventory, business processes, and personnel all with the goal of meeting daily quotas. RFID technologies assist in boosting the efficiency of wood and paper product manufacturing businesses across Canada and the U.S. by enabling the...
Date: 2017-10-24 09:59:31
Website:
gaorfid.com
RFID Technology Applications covers logistic, supply-chain ...
RFID Technology Applications
Compared to the other kinds of connection method such as NFC, Bluetooth, WLAN, Zigbee, and others, RFID may have the most dominant usage. We can find it everywhere in almost every aspect of life. In industry, security, monetary, communication, home appliance, or even simple things such as furniture is nowadays using RFID technology. The development of it is also...
Website:
https://narmadi.com
Maintenance, servicing and facility management with RFID & NFC
Home Applications Maintenance, servicing & facility management
Maintenance, servicing & facility management
Increase you efficency
RFID/NFC transponders are the ideal way of uniquely labelling and effectively managing large numbers of items. They prevent mix-ups and greatly simplify capturing processes (including documentation). This is how to turn maintenance, servicing and facility management...
Website:
https://www.smart-tec.com
Related topics : asset management system using rfid / asset management using rfid / companies using rfid technology / inventory management using rfid / rfid asset management services
RFID Blocking Money Belt for Travelling - Zero Grid
Two convenient zippered pockets for quick access to what you need
YKK zippers that don't get stuck and last for years
Sleek design that's slim enough to be virtually invisible under any shirt
Hidden wallet that keeps pickpockets guessing without compromising on convenient access
Rear storage pouch for quick access to small items
Adjustable waistband that's flexible and comfortable - even after...
Website:
https://zerogrid.com
Tag Reader | BeNext B.V.
Place the Tag Reader close to the main exit of your office or home to enjoy it's full potential.
With the Tag Reader you can activate or de-activate your security by simply passing the RFID Tag in front of the reader. It is called a Tag Reader because it uses RFID Tags to identify people and their personal preferences around leaving the house or coming home.
Separately from working with RFID Tags, the Tag Reader also has a numerical keypad. Within the free of charge online manager you can configure a numerical code. This way you prevent being locked out of the system in case you may have lost the RFID Tag.
By using the Tag Reader intelligently...
Website:
https://www.benext.eu
Related topics : rfid security tag reader / active rfid tag and reader / active rfid tag reader / rfid tag reader benext / rfid tag and reader working
Gate Barrier – Leading Supplier - In Qatar – Adax Business ...
ARM GATE BARRIERS
Security Gate Barrier / Automatic Arm Barrier Provider in Qatar
Are you looking to install a robust gate barrier system from a reliable security gate barrier dealer in the state of Qatar. Gate barrier which is also known as security gate barrier system is a method to restrict vehicle access to your parking places. This acts as security access gate in vehicle parking areas.
We...
Website:
http://www.adaxbs.com
PPT - RFID BASED LIBRARY MANAGEMENT SYSTEM PowerPoint ...
Fastest, easiest, most efficient way to track, locate & manage library materials
Efficient Book circulation management
Library inventory tracking in minutes instead of hours
Multiple books can be read simultaneously
Unique ID of the RFID tag prevents counterfeiting
Automated material handling using conveyor & sorting systems
RapidRadio Solutions Pvt. Ltd.
RFID Benefits Libraries...
Stock...
Website:
slideserve.com
How to Know If There Is an RFID in My Credit Card | It ...
While RFID is used heavily in shipping and warehousing applications to allow pallets and packages to be tracked, it is also becoming popular with the financial services industry. RFID-enabled credit cards can be read without contact, letting you wave them by a reader, tap them to a reader or otherwise avoid going through the process of a swipe. While this communications technology can be...
Website:
https://itstillworks.com
Related topics : destroy rfid chip in credit card / rfid chip credit card security / rfid chip in credit cards / credit card companies using rfid technology / rfid credit card reader scanner
RFID Conference 2016 — By RFIDiDK
Wireless Identification and the Internet of Things
The annual RFID i Danmark 2016 Conference
Tuesday�31st�of May at the IT University in Copenhagen
Across Industries the most innovative companies are already tracking, tracing, locating, identifying,�authenticating every day by the use of Wireless Identification ('RFID') - because they get significant�advantages!
However, now heading...
Website:
http://2016.rfididk.org
Rfid Handbook: Fundamentals and Applications in ...
· 12 Ratings · 1 Review
RFID (Radio Frequency Identification) is used in all areas of automatic data capture allowing contactless identification of objects using RF. With applications ranging from secure internet payment systems to industrial automation and access control, RFID technology solutions are receiving much attention in the research and development departments of large...
Website:
goodreads.com
Related topics : rfid handbook fundamentals and applications in contactless smart cards and identification / radio frequency identification technology (rfid) / radio frequency identification technology rfid / rfid tags and contactless smart card technology / radio frequency identification rfid systems
RFID Asset Tracking Solutions,Applications
General Asset Monitoring
Do you need an easier, more cost-effective way to monitor operational equipment and processes? Would you like to extend this capability to your customers through the products you produce? GAO RFID Asset Tracking can help you monitor real assets and processes, and deal with potential problems proactively to reduce warranty costs.
RFID for Healthcare
Hospitals and the...
Website:
http://www.gaorfidassettracking.com
How Long Do RFID Chips Last? | Techwalla.com
RFID stands for radio frequency identification, a technology that identifies, locates and tracks items using radio waves. When an item is tagged with a tiny silicon chip and an antenna -- collectively known as an RFID tag -- it can be scanned by a mobile or stationary reader to identify the item. RFID chips last varying lengths of time, depending on the design of the RFID tag and nature of the...
Website:
https://www.techwalla.com
E-Business Solutions Limited / RFID Library Management ...
The RFID Library Management Solution is designed to offer one-stop convenience to library staff and users via RFID technology. Using the latest RFID technology, information can be read much faster than with traditional barcodes. This technology improves economic efficiency and provides cost saving measures, while at the same time providing better protection of library resources. Our Solution can support small office library as well as mega libraries with millions of books.
Key Benefits
Enable multiple items check-in/-out simultaneously
Increase patronage by...
Website:
http://www.ebsl.hk
Related topics : library management using rfid technology / library management system using rfid / rfid tag library management system / cost of rfid library management system / rfid library management system
New RFID system to monitor traffic, track down criminals
New RFID system to monitor traffic, track down criminals
Posted on 25 August 2015 - 12:45am
Last updated on 25 August 2015 - 01:10pm
Shahrim Tamrin
PUTRAJAYA: A new vehicle security tracking system suitable for all types of vehicles - the Radio Frequency Identification (RFID) - will be implemented nationwide by the Road Transport Department (JPJ) by 2018.
Even suitable for motorcycles, the...
Date: 2018-01-12 07:39:08
Website:
http://www.thesundaily.my
Difference Between RFID and Barcode | Difference Between
o Categorized under Technology | Difference Between RFID and Barcode
RFID vs Barcode
Barcode is the most common method of tagging used today. Almost all products that are being sold have their own barcode that makes it easier for the teller to get the right price of the product. A barcode scanner uses a light that is reflected on a series of black bars to read the data, these data is then...
Website:
http://www.differencebetween.net
Related topics : radio frequency identification tags (rfid) / rfid radio frequency identification tags / rfid barcode tags / difference between rfid and barcode scanner / difference between rfid and barcode technology
RFID System Hardware, Supplies, & Equipment - Big Sales ...
RFID Software: Inventory, Asset Tracking, Surveillance, Printing & More
Barcode Giant has a full range of RFID Tracking Software , RFID Printing Software , RFID Inventory Software , and RFID File Tracking Software to help manage the items for your business with the latest technology. Our RFID software is designed to collect data using passive UHF RFID technology. Check out our RFID Software...
Website:
barcodegiant.com
Grocery industry operations are facing a real ... - RFID Arena
Grocery industry operations are facing a real paradigm shift
11 April 2013
Hanna Långström
Item-level RFID is finally on the way into the grocery sector. High shrinkage rates, manual labor errors and poor product availability are all in the past. From now on, there is nothing but smooth sailing.
It takes a few big leaders to show the way, a few costs to drop and a bit of prepping of customers,...
Website:
http://rfidarena.com
Related topics : grocery store rfid tags / retail theft prevention systems rfid tags / rfid tag reader system / rfid travel items / rfid stolen items
Benefits of using RFID badges for events | IDentilam
Why do event organisers want to use RFID technology for their events? Well we've been providing RFID (Radio Frequency Identification) badging for many years now but up until fairly recently this has mainly been used for recording and controlling delegate attendance to events as a direct alternative to barcode technology. Increasingly our clients are looking to utilise RFID in other areas such as...
Website:
identilam.co.uk
Related topics : rfid badges for events / rfid technology uses / radio frequency identification technology (rfid) / radio frequency identification technology rfid / radio frequency identification tags (rfid)
Innovation at Confidex - RFID C1G2 UHF Tag Solutions
Innovation at Confidex
Making cities, factories and supply chains smarter
RFID technology is a backbone technology for the Internet of Things. It has become a part of everyday life for most of us. It has become a vital part of supply chain management, improving delivery capabilities and traceability of items. Today RFID is widely used in access control, border control and public...
Website:
confidex.com
Related topics : improvement of supply chain performances using rfid technology / achieving supply chain integration using rfid technology / new design antenna for rfid uhf tags / rfid technology supply chain management / antenna design for uhf rfid tags
What to do about RFID chips in your wallet - TechRepublic
Have you wondered about the security implications of RFID chips in your driver's license, credit cards, and passport? The growing prevalence of RFID transponders in these items, and others, can raise security concerns. You should know what issues arise, and what you can do about them.
Google Plus
Anyone who has read Cory Doctorow's Little Brother -- mentioned in a previous article, Five good...
Website:
techrepublic.com
What to do about RFID chips in your wallet - TechRepublic
Have you wondered about the security implications of RFID chips in your driver's license, credit cards, and passport? The growing prevalence of RFID transponders in these items, and others, can raise security concerns. You should know what issues arise, and what you can do about them.
Google Plus
Anyone who has read Cory Doctorow's Little Brother -- mentioned in a previous article, Five good...
Website:
techrepublic.com
Related topics : rfid chip credit card security / disable rfid chip in credit card / rfid chip card security / rfid chip security issues / rfid chip card reader
Method and apparatus of RFID tag contactless testing ...
A semiconductor wafer includes a plurality of dies. Each of the plurality of dies includes a radio frequency identification (RFID) tag circuit and a coil. The RFID tag circuit includes a tag core, an RF front-end circuit, an ID decoder, a comparator and conductive line for a unique ID. The RF front-end circuit is configured to receive electromagnetic signals through the coil in each of the...
Website:
http://www.freepatentsonline.com