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Radio Frequency(RF) Labels - RF Security Labels, Radio ...
Home » Products » RF Labels
RF Labels
We have come up with a wide assortment of RF Labels that are available in various attractive colors and designs to cater the variegated demands of clients. These are widely used to store and rewrite the items related information. Moreover, our clients appreciated these RF Labels for their wonderful labeling security.
RFID & EAS:
We at...
Website:
http://www.bartechsystems.net
Essay: RFID (Radio Frequency Identification) - Essay UK ...
Essay: RFID (Radio Frequency Identification)
Essay: RFID (Radio Frequency Identification)
Abstract'RFID (Radio Frequency Identification) uses radio wave to identify an object. It's mainly used to automatic identification of object in similar manner to barcode but it is not replacement of barcode. Different varieties of RFID tags can be found in market based on their functionalities.
Index Terms -...
Website:
essay.uk.com
Rfid Technology In The Library Environment
Rfid Technology In The Library Environment
Design and Development of RFID based Library Information . RFID technology is a wireless sensor . processes and operational environment in the library, .. (RFID) technology in library . library environment, RFlD technology it provides a means of .RFID technology is providing the Library's an exciting . Environment and . RFID Canada is a leading...
Website:
http://lingwertingnostli.simplesite.com
3 Basic Things to Know About Passive UHF RFID Tags [Video]
shrey Tyagi
Sir,
Can u tell me how hex code stored in the IC chip of the RFID Tag is transferred through the Antenna to the RFID Reader.
atlasRFIDstore
This is actually a very complex process, but, in short, here is how it works with passive RFID tags:
The reader (through its antenna) sends a radio signal to the tag, which acts to "energize" the tag. Once the tag is activated, it reflects back to...
Website:
blog.atlasrfidstore.com
3 Basic Things to Know About Passive UHF RFID Tags [Video]
shrey Tyagi
Sir,
Can u tell me how hex code stored in the IC chip of the RFID Tag is transferred through the Antenna to the RFID Reader.
atlasRFIDstore
This is actually a very complex process, but, in short, here is how it works with passive RFID tags:
The reader (through its antenna) sends a radio signal to the tag, which acts to "energize" the tag. Once the tag is activated, it reflects back to...
Website:
blog.atlasrfidstore.com
Related topics : uhf passive rfid tag reader / passive rfid tag and reader / active rfid tag and reader / active rfid tags and readers price / uhf rfid tag reader
Unitech RP901 Wireless Bluetooth UHF / RFID Pocket Reader
The Unitech RP901 is a compact, light-weight and pocket-sized UHF RFID reader. It is designed and engineered specifically to suit the UHF reading market and application requirements of mobile workers.
Pair the RP901 with your iOS, Android or Windows mobile device via the Bluetooth connection and easily extend your mobile data collection with this UHF RFID reader.
RFID technology
Radio...
Website:
https://www.ers-online.co.uk
UHF RFID Components | Midico System
The RFID UHF reader operates at the frequency range 865.6 - 867.6 MHz for the European frequency band. Up to 4 antennas can be connected to the reader. The reader can be set up and controlled remotely over the Ethernet connector. It also includes USB, CAN, GPIO and power connector.
Antennas are connected to the reader. The antenna in the basic design is covered with a square white plastic. This...
Website:
http://www.midico.eu
RFID Key Fobs Explained – SUMOKEY
YELP
RFID Key Fobs Explained
These RFID systems are categorized by the frequency band in which it operates. Low, High or Ultra-high frequency. However, there are two major categories of RFID systems - Active and Passive, and we are explaining each of their types and frequencies below.�
Common Key Fobs
The common key fobs that are primarily used to access Condos, homes, apartment complexes,�...
Website:
https://sumokey.com
Key Fob Clone Copy and Duplication | sumokey.com
Sale price $79.75
RFID KEY FOBS EXPLAINED
These RFID systems are categorized by the frequency band in which it operates. Low, High or Ultra-high frequency. However, there are two major categories of RFID systems - Active and Passive, and we are explaining each of their types and frequencies below.�
Common Key Fobs
The common key fobs that are primarily used to access Condos, homes, apartment...
Website:
https://sumokey.com
Physical and Data Link Layer Protocols - RFID and Mobile ...
3) CDMA
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RFID and WSN-�Radio Frequency Identification (RFID) is a radio frequency based identification and tracking technology. RFID is a method of uniquely identifying items wirelessly i.e. using radio waves. Based on various regulated ISM bands, the technology uses tags (with in-built microchips) that have unique identification number. The tags could be read using an RFID reader. So, an...
Website:
https://www.engineersgarage.com
Different Types of RFID Systems | Impinj
TYPES OF RFID SYSTEMS
�
Now that you know how RFID systems work, it's time to go deeper into the different types of systems available. RFID systems can be broken down by the frequency band within which they operate: low frequency, high frequency, and ultra-high frequency.
There are also two broad categories of systems--passive and active RFID. In the sections below we will explore the...
Website:
impinj.com
Handheld RFID Reader in Bangalore - Manufacturers and ...
389, Blue Moon Building, Terrace Floor, 9th Main, Sector-7, Karnataka - 560102, India
https://www.exportersindia.com/curious-venture-company4072246/
Rfid Readers
With a software adjustable read distance up to 3 feet (0.91 m), the USB Plus+ supports a variety of applications, including RFID tag commissioning, manufacturing WIP, document tracking, library book check inout, retail point of sale, event and hospitality services, hospital patient workflows, and more. UHF, EPCglobal Gen 2 (ISO 18000-6C) compliant Anti-Collision & Dense reader mode (DRM) Internal linear polarized...
Date: 2018-01-03 08:04:31
Website:
exportersindia.com
Understanding the confusing world of RFID tags and readers ...
Understanding the confusing world of RFID tags and readers in access control
Understanding the confusing world of RFID tags and readers in access control
Wiegand, 120 kHZ, UHF, EPC, microwave, MIFARE, RS232, RS485, clock and data, AES, facility codes, client codes: The world of access control and vehicle identification is literally filled with concepts, techniques, acronyms and words that people...
Website:
http://www.nedapidentification.com
Different Types of RFID Systems | Impinj
TYPES OF RFID SYSTEMS
�
Now that you know how RFID systems work, it's time to go deeper into the different types of systems available. RFID systems can be broken down by the frequency band within which they operate: low frequency, high frequency, and ultra-high frequency.
There are also two broad categories of systems--passive and active RFID. In the sections below we will explore the...
Website:
impinj.com
3M 895 RFID Pad Reader Desktop Reader, Delhi ... - celect.in
UHF 860 RFID Reader
RFID Pad Reader 895
The 3M??? RFID Tracking Pad, a com RFID File Tracking System, is a small device about the size of a mouse pad. Connected to a computer running the 3M RFID Tracking Pad monitor software, the Tracking Pad can be used to easily program/reprogram tags as well as to check in and check out files.
Box Size:1
Unit Size:Pad : (21.6 cm x 21.6 cm) & Reader: (13.3 cm x 11.4 cm)
As an essential component of the system, the Tracking Pad can be placed in high traffic areas such as file rooms, central processing areas, conference rooms, or even offices....
Website:
http://www.celect.in
Related topics : 3m rfid file tracking system / rfid file tracking system / uhf rfid desktop reader / 3m rfid reader / rfid file tracking software
Waterproof RFID Bracelet - RFID tags | RFID Card Readers
Waterproof RFID Bracelet
Our Silicone Waterproof RFID Bracelet comes in a wide range of color selection of White, Black, Yellow, Light Blue, Dark Blue & Red.
Made from soft synthetic silicone rubber,...
Website:
http://www.orangetags.com
Related topics : rfid bracelet tag / rfid chip card reader / rfid id card reader / hid rfid card reader / card reader rfid
Mobile Asset Tracking Technologies: Barcodes, QR Codes ...
Mobile Applications For Inventory Management, Data Collection And Workflow
Mobile Asset Tracking Technologies: Barcodes, QR Codes, NFC, RFID, GPS Tags
How do mobile asset tracking technologies (barcodes, QR codes, NFC, RFID, GPS) work and which one will fit better into your business workflow.
When people say asset tracking they mean different things. One person may refer to their vehicle fleet,...
Date: 2017-11-24 20:22:31
Website:
http://www.ahg.com
Using RFID to Overcome Inventory Control Challenges ...
July 15, 2009
1 Introduction
In recent years, (Radio-Frequency Identification) RFID technology has attracted the attention of the industrial community as well as the scientific community. RFID technology is a wireless automatic identification and data capture (AIDC) technology [1] that enables the identification of any tag item in real-time in a given supply chain with a minimum human...
Website:
http://www.katinamichael.com
ID01 UHF RFID Reader-USB-DFRobot
BUY NOW
INTRODUCTION
UHF RFID MODULE-USB this RFID tag reader is a remote read-write module of IC card using non-contact UHF technology. It can be widely used in vehicle monitoring, remote control, home alarm system, wireless meter reading, access control system, industrial data acquisition system, the wireless tag, identification,...
Website:
https://www.dfrobot.com
[IDRO TV] UHF RFID Reader Embedded Antenna ... - movie.com.pk
Video uploaded by : GAO RFID Inc.
Video release date : Jul 15th, 2016
GAO RFID's UHF 860-960 MHz 4 Port Long Range RFID Reader features a compact size, light weight and multi-regional flexibility. It has 4 antenna ports and is compliant with...
Website:
http://movie.com.pk
Related topics : rfid uhf long range reader / uhf rfid reader antenna / embedded uhf rfid reader / rfid uhf long range antenna / rfid uhf reader range
433MHz Active RFID Reader with USB from GAO - Embedded ...
Toronto, Canada - GAO Tek Inc. (www.GAOTek.com) recommends its optimized 433MHz Active RFID Reader with a USB interface (GAO 214014)
Toronto, Canada - GAO Tek Inc . ( www.GAOTek.com ) recommends its optimized 433MHz Active RFID Reader with a USB interface (GAO 214014), which incorporates a standard USB cable for connection to any standard USB port for data transmission and power. This easy to use reader operates as a Plug and Play device.
GAO's esthetically pleasing and ergonomic active RFID reader works...
Website:
http://embedded-computing.com
Related topics : active rfid tag and reader / active rfid tag reader / active rfid reader range / active rfid reader / rfid tag reader usb
RFID Uniform System - Software Management Solutions
The InvoTech Uniform System with RFID technology eliminates manual tasks and human error, gives operators total control, and makes accurate information always available. The System provides real-time information on exactly what transpired with every read - what type of transaction, and where and when it occurred.
�
RFID Tags
The RFID tags are attached to all uniforms to uniquely identify each...
Date: 2019-04-10 22:08:48
Website:
http://www.invotech.com
The New Zealand RFID Pathfinder Group
Basic information about RFID
Introduction of RFID
Radio-frequency identification (RFID) is the wireless use of electromagnetic fields to transfer data, for the purposes of automatically identifying and tracking tags attached to objects. The tags contain electronically stored information. Some tags are powered by electromagnetic induction from magnetic fields produced near the reader. Some types...
Website:
http://www.rfid-pathfinder.org.nz
Home Page - Music Festival RFID Solutions by PDC
photo credit: Intellitix
PDC RFID Wristbands
It's no secret that the rise of RFID technology is setting a higher standard for festival production. With RFID, festivals have become more than a concert, film viewing, or wine tasting; they're a personalized experience for each individual in the crowd. Instant secure access, cashless payments, and social media integration mean fans no longer have...
Website:
http://musicfestivalsrfid.com
RFID BlueBerry iS UHF by TERTIUM Technology
BlueBerry iS UHF is an RFID key fob reader capable of reading an UHF RFID tag and transmit it via Bluetooth® to any device equipped with that interface. With the push of a single button, this easy-to-use device allows the reading and transmission of RFID tag data to a mobile device.
The device has a reading distance of 30 cm with tag far field and 2 cm with tag near field (depending on the used...
Website:
http://www.tertiumtechnology.com
Rfid India Issues And Challenges Information Technology Essay
Rfid India Issues And Challenges Information Technology Essay
Published:
Last Edited:
23rd March, 2015
This essay has been submitted by a student. This is not an example of the work written by our professional essay writers.
RFID, or Radio frequency identification, is a generic term for technologies that use radio waves to automatically identify objects and collect data. The use of RFID dates...
Date: 1970-01-01 00:00:00
Website:
https://www.ukessays.com
Related topics : passive rfid tags cost in india / rfid tag reader price india / price of rfid tag and reader in india / rfid technology companies in india / companies using rfid technology in india
Rfid presentation - fr.slideshare.net
RFID Technology & It's UsesRFID Technology & It's Uses Presented by: Ron AbdyPresented by: Ron Abdy 33rdrd July 2013July 2013
2. Who is BCDS? Founded in 1982 in New South Wales Headquarters in Sydney Australia Experienced in products through Asia Data capture solutions leader
3. What Has BCDS Implemented?What Has BCDS Implemented? Asset Tracking - Astrack Enterprise Visitor Tracking ...
Website:
https://fr.slideshare.net
ALIEN RFID Reader ALR-9800, ALIEN RFID Tags, RFID Labels ...
ALIEN ALR-9800 RFID Reader
The Alien ALR-9800 is the RFID reader based on the Alien Enterprise RFID Platform, designed from the ground up for EPC Class 1 Gen 2 compliance. The ALR-9800 sets new standards for RFID readers through its:
Enterprise-scalable architecture
Highest performance read capability
Superior dense reader management
The result is a new-generation reader ideal for...
Website:
http://www.scanplanet.com
Related topics : epc gen 2 rfid tag / alien rfid tag reader / alien rfid reader software / alien 9800 rfid / alien rfid reader antenna
Rfid presentation - de.slideshare.net
RFID Technology & It's UsesRFID Technology & It's Uses Presented by: Ron AbdyPresented by: Ron Abdy 33rdrd July 2013July 2013
2. Who is BCDS? Founded in 1982 in New South Wales Headquarters in Sydney Australia Experienced in products through Asia Data capture solutions leader
3. What Has BCDS Implemented?What Has BCDS Implemented? Asset Tracking - Astrack Enterprise Visitor Tracking ...
Website:
de.slideshare.net
UCODE®|NXP
Products
Ideal for supply chain and logistics applications requiring high-speed operation, NXP's EPCglobal-compliant UCODE passive UHF transponder IC family offers high anti-collision rates, high sensitivity for long read range, and wide frequency range for worldwide application. The UCODE IC family provides varying memory sizes and other special features to allow the user to select the best...
Website:
nxp.com
Related topics : active rfid tag read range / passive rfid tag read range / rfid tag read range / rfid reader long read range / uhf rfid tag ic
RFID Tag Types – Electronic Product Design
Adam
Low Frequency vs High Frequency
Low frequency readers are often cheaper (although not always due to the mass production of high frequency).
Low frequency writable�tags typically have smaller memory and the data transfer between read and tag is slower due to the lower frequency.
High frequency tags can often have a shorter range than low frequency.
High frequency tags are often cheaper due to mass production volumes.
Maximum range - for low cost modules such as those from people like� ibtechnology.co.uk
For high frequency 13.56MHz iCode will likely give you the best range for a writable tag. �However it won't be as big as for the best low...
Race Timing Readers, Tags and Other Products Orbiter ...
Price $7,995.00 each.
Buy 2 for $4,995.00 each.
Mobile RFID Race Reader w/ Side Antennas . Our bollard systems come complete with reader, wireless radio and battery for quick and simple operation. Just roll it into place and turn on and the system will connect wirelessly to the computer to run your race. Accurate timing detects racers at the finish line. No wasting time with dirty mats, running...
Website:
http://orbiter.com
RFID - Camco terminal automation solutions
RFID cards for access control and tracking of vehicles and drivers
RFID�for identification and tracking of people and assets
Many�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 automatically read by RFID readers when in range. The tag data can then...
Website:
camco.be
Access Control, SmartCard and RFID Proximity Readers
Card ISO-Thin, Imageable HID Proximity Access Card
Offers proximity technology with photo identification capability on a single card
Card Choices
Printable label for ProxCard II Clamshell Card
Adhesive backed, printable label, cut to fit ProxCard II. Model Part Number: 1324
1336 DuoProx II
Card ISO-Thin, Imageable HID Proximity Card with Magnetic...
Date: 2016-02-02 01:00:07
Website:
http://rfidaccesscontrol.com
Related topics : rfid smart card reader writer / rfid mifare proximity card reader writer / rfid and contactless smart card / rfid smart card reader / rfid proximity card reader
Advanced RFID Measurements: Basic Theory to Protocol ...
�
Table 1. Comparison of the Typical RFID Read Range According to Frequency Band (Passive Tags)
While Table 1 compares the read range of passive tags, note that there are actually three RFID tag types: active, passive, and semiactive. Because active and semiactive tags use an onboard power source to power the tag response, they are typically capable of much longer read ranges. Passive tags, on...
Website:
http://www.ni.com
Related topics : 915 mhz rfid tags / rfid tags and readers cost / how much do active rfid tags cost / cost of rfid readers and tags / rfid tag and reader circuit
RFID BASED INVENTORY CONTROL
RFID tags are comprised of a tiny microchip which is attached to an small antenna. Basic RFID tags can be as large as a 4x6" label or as small as quarter and usually cost anywhere from 10-cents to a dollar once integrated into an adhesive label or package. More advanced tags can have sensors and batteries attached to enhance their functionality and read range but are more costly....
Website:
youtube.com
Related topics : rfid tag read range / rfid tags for inventory control / rfid tags and readers cost / cost of rfid readers and tags / small rfid tag reader
PR - austriamicrosystems’ AS3991 UHF RFID reader IC ...
The AS3991 UHF reader chip is an integrated analog front-end and data framing system for a 900MHz RFID reader system.
�
Unterpremstaetten, Austria (Nov 3, 2010) - austriamicrosystems (SIX: AMS), a leading global designer and manufacturer of high-performance analog ICs, has announced that Nordic ID's new multifunctional handheld computer -- called the Nordic ID Morphic -- utilizes...
Date: 2017-12-09 23:20:13
Website:
http://ams.com
ePanorama.net - Links
SmartCard Edit/Read/Write Software - for almost any kind of smartcard Rate this link
Smartcard articles
Java Card Security - How Smart Cards and Java Mix Rate this link
RFID tags connect smart cars to smart highways - small RF identification (RFID) tags are part of the critical communication link between automobiles and electronically directed "smart" highways and there are also...
Website:
http://www.epanorama.net
austriamicrosystems’ AS3991 UHF RFID reader IC ...
AS3991 UHF reader chip is an integrated analog front-end and data framing system for a 900 MHz RFID reader system
Unterpremstaetten, Austria (Nov 3, 2010) - austriamicrosystems (SIX: AMS), a leading global designer and manufacturer of high-performance analog ICs, has announced that Nordic ID's new multifunctional handheld computer -- called the Nordic ID Morphic -- utilizes austriamicrosystems'...
Website:
http://embedded-computing.com
Symbol MC9060-G RFID RFID Reader - mbcestore.com
Symbol MC9060-G RFID RFID Reader
MC9000-G Real-Time Mobile Computing.
The MC9000-G with RFID from Symbol Technologies is a ruggedized mobile computer that features integrated support for the most popular radio frequency identification standard EPC, the Electronic Product Code. By integrating support for either EPC Class 1 or Class 0 RFID reading and programming with a robust commercial mobile...
Website:
http://www.mbcestore.com
Related topics : rfid technology supply chain management / motorola symbol rfid readers / rfid applications in supply chain management / rfid technology supply chain / symbol rfid reader
Passport Readers, Travel Document OCR Readers, ePassport ...
Introduction of document reading
Passport Readers · Travel Document OCR Readers · Visa and ID Card Readers · Portable Readers · e-Passport Readers · RFID readers ·Full Page OCR Document Scanners · Robust Highly-Durable Devices
Our passport OCR reader products are designed to meet the latest demands of travel document reading, passport reading, visa and ID card OCR reading. We offer a range...
Date: 2015-07-02 13:38:19
Website:
http://www.arhungary.hu
Related topics : rfid card reader mobile / rfid chip card reader / rfid reader mobile device / rfid card reader technology / mobile rfid readers
Robust RFID Tags Track Firearms - mwrf.com
This block diagram identifies the components of an RFID system.
The RFID tags are powered from the RF field generated by the external electronic devices (the interrogator/reader) generating the RF field and designed to communicate with (read) the tag. Tags designed to this standard are "vicinity devices" and have a limited read range of approximately 1 m depending on their size and the size and...
Date: 2019-04-10 22:41:54
Website:
mwrf.com
bildr » Can You ID This? ID-20 RFID Reader + Arduino
Can You ID This? ID-20 RFID Reader + Arduino
Wednesday, February 23 rd , 2011
A few weeks ago we showed you how to control your arduino over serial . Well this week are going to do the same thing. Only this time instead of using the serial monitor to send the commands, we will be using the Innovations ID line RFID reader.
RFID , or Radio Frequency Identification, is basically a wireless barcode,...
Website:
http://bildr.org
RFID tag | The IT Law Wiki | Fandom powered by Wikia
Form factor .
Tags can be attached to items using an adhesive or can be embedded within the item. The primary concern when a tag is attached to an item is how easily it might be detached, whether accidentally or maliciously. Tags attached to items also are more vulnerable to harsh environmental conditions such as dust, debris, humidity, precipitation, and extreme temperatures. However, the...
Date: 2013-12-13 16:36:05
Website:
http://itlaw.wikia.com
Related topics : passive rfid tag and reader / rfid passive tag reader cost / rfid tag and reader communication / passive rfid tag reader price / rfid active reader passive tag
What Is the Purpose of RFID? | eHow
Save
Radio Frequency Identification (RFID) is a technology designed to allow objects, animals and even human beings to be identified, located, and tracked using radio frequency signals. The history of RFID can be traced back to World War II, when it was used by the British to identify friendly aircraft. The technology has developed over the years and is now used in a wide range of...
Website:
http://www.ehow.com
Related topics : rfid reader access control system / rfid based security and access control system / rfid tag reader system / active rfid tag and reader / active rfid tag reader
⭐Zebra. Radio Frequency Identification (RFID) Programming ...
Zebra Radio Frequency Identification (RFID) Programming Guide 58978L-008
2 2008 ZIH Corp. The copyrights in this manual and the software and/or firmware in the printer described therein are owned by ZIH Corp. Unauthorized reproduction of this manual or the software and/or firmware in the printer may result in imprisonment of up to one year and fines of up to $10,000 (17 U.S.C.506). Copyright...
Website:
http://docplayer.net
Related topics : programing rfid tags / rfid label printers / rfid tags suppliers in india / metal embedded rfid tags / hf rfid tags india
BOMBPROOF RFID - Smart RFID tag manufacturing makes ...
BOMBPROOF RFID - Smart RFID tag manufacturing makes reading next to metals and liquids a reality
06 June 2013
Mirva Saarijärvi
With the help of a mobile RFID computer, you can read all the clothing tags inside a cardboard box from across the room. But fill that box with cans of Coca-Cola, and you might not be able to read tags until you are inches away. How to solve these issues?
Author: Carl...
Website:
http://www.rfidarena.com
RFID in South Africa - RF Tags
RFID in South Africa
RFID or Radio Frequency Identification is the name for a set of techniques used for the identification and tracking of various items.
In the mid 1980's the cost and size of electronic circuitry reduced dramatically. At the same time power consumption of microcircuits fell even more markedly. These advances made it possible for the production of low cost "tags" that could...
Website:
http://www.rftags.co.za
Related topics : rfid tag read range / low cost rfid tag reader / radio frequency identification tags (rfid) / rfid radio frequency identification tags / how to read rfid tag
USB Pro RFID Reader (NEW) - ThingMagic.com
The USB Pro RFID Reader is that latest desktop RFID reader from the ThingMagic division of Trimble. Based on the M6e-Micro LTE RFID module the USB Pro reader offers a number of enhancements including:
Wider power range
Enhanced firmware features
The USB Pro reader is preconfigured for most regions in the world including the Americas (FCC / IC rules) Europe (ETSI rules) India (TRAI) Korea (KCC) Australia (ACMA) China (SRRC-MII) and Japan (MIC). The reader also has a customizable option to accomodate other areas and research applications.
The wider power range from -5 to +30 dBm gives...
Website:
http://www.thingmagic.com
Related topics : thingmagic uhf usb rfid reader / uhf rfid usb desktop reader / micro usb rfid reader / usb uhf rfid reader / rfid tag reader usb
Motorola MC9090 RFID Wireless Barcode Scanner
Larger Image
[-]
Give your workers the ability to capture a comprehensive range of data RFID tags and bar codes to images with this flexible multi-function RFID handheld reader. Single device simplicity...
Website:
https://www.barcodespot.com
Related topics : handheld rfid reader motorola / cost of rfid handheld reader / rfid reader mobile device / handheld rfid reader / motorola handheld rfid scanner