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Design Guideline – Hitachi USPT Ultra-Small UHF RFID Tag ...
Design Guideline - Hitachi USPT Ultra-Small UHF RFID Tag
27
Flip through the 3D design guideline for great ideas on tag use and placement.
Design Guideline - Hitachi USPT Ultra-Small, Versatile, Embeddable, Indestructible UHF RFID Tag
Hitachi Chemical's�Ultra Small Package Tag (USPT,�IM5-PK2525) an EPC Gen 2 passive Ultra High Frequency (UHF) RFID tag that is one of the smallest and most...
Website:
https://echaintechnology.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
What Are the Different Types of RFID Technology? | Lowry ...
Radio frequency identification (RFID) technology has become much more common across a number of industries, but there are a variety of different types of RFID technology, tags, and readers -- each uniquely suited to different types of applications.
RFID tags can be classified by the radio frequency range they use to communicate (low, high, or ultra-high), and the way the tag communicates with the...
Website:
lowrysolutions.com
Active Passive RFID Tag Reader Proximity - advantidge.com
Contact Us
What's the Difference Between Active and Passive RFID for ID Badges?
Active RFID and Passive RFID are fundamentally different technologies that are often mistaken for one another.� While both use radio frequency energy to communicate between a tag and a reader, the method of powering the tags is different.� Active RFID uses an internal power source (battery) within the tag to...
Website:
https://www.advantidge.com
Rugged 2.4-GHz Active RFID Reader For Industrial Applications
This 2.4-GHz active RFID reader combines an impressive long range with a rugged design suitable for harsh industrial applications and survival in application temperatures up to 70 Celsius degree.
For industrial applications, this rugged 2.4-GHz active RFID reader is optional with various layer communications interfaces. To download tag data to a host computer, this 2.4-GHz RFID reader uses RS232,...
Website:
https://www.varinsights.com
RFID tag antenna based temperature sensing - researchgate.net
Email: rahul b, floerkem and sesarma@mit.edu
Abstract--Temperature monitoring is important in a num-
ber of fields, particularly cold supply chain applications. Most
commercial wireless temperature sensors consist of transceivers,
memory and batteries to maintain a temperature time history but
this is expensive and allows for limited sensor deployment. In this
paper, we propose a low cost...
Date: 2016-11-23 11:26:46
Website:
https://www.researchgate.net
Related topics : rfid tag antenna based temperature sensing / rfid tag temperature sensor / long range passive rfid tag for sensor networks / dipole antenna design for uhf rfid tags / antenna design for uhf rfid tags
Rugged 2.4-GHz Active RFID Reader For Industrial Applications
This 2.4-GHz active RFID reader combines an impressive long range with a rugged design suitable for harsh industrial applications and survival in application temperatures up to 70 Celsius degree.
For industrial applications, this rugged 2.4-GHz active RFID reader is optional with various layer communications interfaces. To download tag data to a host computer, this 2.4-GHz RFID reader uses RS232,...
Website:
https://www.datacollectiononline.com
RFID Sensor Tag, HF RFID, Avery RFID - IC-TAG Solutions, Inc.
Please click here to request more information or call 708-430-4190 to speak with a sales representative.
Sensor Tags
Copyright 2013 "IC-TAG Solutions, Inc." All Rights Reserved.
IC-TAG Solutions, Inc. now provides high-frequency (HF) passive 13.56 MHz RFID Sensor Tags which enable the detection of gases and toxic compounds. Other types of measurement classes...
Date: 2013-10-12 05:19:01
Website:
http://www.ictagsolutions.com
RFID: The New Technology - Tech Featured
Tweet on Twitter
Origin of RFID tags
Leon Theremin is thought to be the first user or inventor of this device as the inevitable part of spy-kit for the Russian Government in 1945. This cannot be a reliable story: the tool invented by Theremin was a passive covert listening device and not an identification tag. The technology applied in RFID has actually been since the early 1920s. The IFF...
Website:
https://techfeatured.com
Different Types of RFID System | Centrex Technologies
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 RFID systems--passive and active. In the sections below we will explore the frequencies and types of RFID systems.
RFID Frequencies
Frequency refers to the size of the radio waves used to communicate between RFID system...
Website:
ctrx.com
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
RFID - AIM India
RFID tags come in a wide variety of shapes and sizes. Animal tracking tags, inserted beneath the skin, can be as small as a pencil lead in diameter and one-half inch in length. Tags can be screw-shaped to identify trees or wooden items, or credit-card shaped for use in access applications. The anti-theft hard plastic tags attached to merchandise in stores are RFID tags. In addition, heavy-duty 5-...
Website:
http://www.aimindia.co.in
Related topics : active rfid tag read range / passive rfid tag read range / difference between passive and active rfid tags technology / rfid active reader passive tag / cost of active and passive rfid tags
RFID Tag | Bar Code India Ltd
Wristband Tag is used for access control at events, in amusement parks and recreational areas for automated admissions, guest
More
identification, cashless transactions at Point of Sale and keyless entry. This tag appears similar to a...
Less
Wristband Tags are used for Access Control in amusement Parks, Recreational Areas for Automated Admissions, guest identification and
More
keyless entry....
Website:
barcodeindia.com
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 FAQs - Barcoding, Inc.
Check out some of our most frequently asked questions about RFID (radio frequency identification) technology. Since 1998, we've helped companies add the power of RFID to their businesses. We can help you too!
Have a question we didn't cover? Please contact us !
FAQs on RFID Technology and RFID Systems
What is RFID?
RFID, or Radio Frequency IDentification, is a data collection method that...
Website:
http://www.barcoding.com
Related topics : rfid tags replace barcodes / small rfid tags long range / rfid tags future uses / rfid tags and readers cost / how much rfid tags cost
RFID news from wireless - ElectronicSpecifier
Power efficient RFID chip improves supply chain management
With the launch of its new global UCODE 8 RAIN RFID chip platform,�NXP Semiconductors pushes the boundaries of RAIN RFID innovation. The platform�enables omnichannel retailers to improve supply chain management and achieve higher sales, transform consumer shopping experiences and enable brand protection. The new UCODE 8 is a universal...
Website:
wireless.electronicspecifier.com
RFID: A Tool For Tracking Products, Assets And More | Food ...
RFID: A Tool For Tracking Products, Assets And More
by Elliot Maras On Dec 17, 2015
Photo credit: Barcoding Inc.
The facility map in the yard management solution by PINC Solutions gives East Coast Warehouse & Distribution visibility over its container locations.
The PINC Solutions yard management system includes a dashboard that allows East Coast Warehouse & Distribution to track assets.
The...
Website:
http://www.foodlogistics.com
Related topics : rfid tag data for products consist of the following information except / rfid tags product tracking / rfid solutions for supply chain management / use of rfid in supply chain management / achieving supply chain integration using rfid technology
Long Range RFID | 433 mhz | 2.4 GHz - skyrfid.com
- 433 MHz, 2.45 GHz & SHF Active RFID -
5.7GHz, 2.4 GHz & 433 MHz Long Range RFID Technologies
All three of these technologies use active (battery assisted) tags, which allow them to reaching distances of over 65 feet (20 meters) and can relay sensor information back along with their unique identification. This makes them ideal for situations where other technologies cannot meet the requirements....
Website:
skyrfid.com
RFID Systems - barcode solutions
Is RFID new?
RFID is a proven technology that's been around since at least the 1970s. Up to now, it's been too expensive and too limited to be practical for many commercial applications. But if tags can be made cheaply enough, they can solve many of the problems associated with bar codes. Radio waves travel through most non-metallic materials, so they can...
Website:
http://www.barcode-solutions.com
Related topics : passive rfid tag read range / active rfid tag read range / passive rfid tag uses / passive uhf rfid tag range / difference between active rfid tag and passive rfid tag
Understanding the Different Types of RFID Tags
Understanding the Different Types of RFID Tags
Posted in:
RFID Tags
Types of RFID Tags
There are primarily three basic types of RFID tags that are familiar to most consumers who use the technology:�active, passive, and semi-passive.��When considering purchase of tags for different scenarios, pinpointing which kind of tag to use and integrate into an operation can be tricky. So let's compare...
Website:
http://blog.universalrfid.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
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
(PDF) THE RFID TECHNOLOGY AND ITS APPLICATIONS: A REVIEW
RFID technology has received more and more attention in many areas like manufacturing
companies, agriculture, hospitality [8], industries, parking management [9] and transportation [10]
sectors. Major applications of RFID are given below:
Healthcare Applications
RFID applications in healthcare [6] could save important resources that can further contribute to
better patient care....
Date: 2018-07-31 22:01:22
Website:
https://www.researchgate.net
UHF RFID Tags sur 2 Millions de voitures Volvo – Carte ...
UHF RFID Tags sur 2 Millions de voitures Volvo
Vous êtes ici :
Nouvelles de l'industrie
Car buyers today typically order a number of custom options when they make their purchase. For car manufacturers this means that many of the vehicles they produce are effectively unique. Production is further complicated since several different models are typically assembled in the same production line. To...
Website:
rfidhy.com
Related topics : rfid tags product tracking / passive uhf rfid tag / high temperature rfid tag uhf / rfid tag production process / active uhf rfid tags
RFID News Roundup - 2008-06-12 - Page 1 - RFID Journal
New Israeli hospital to install Wavetrend active RFID technology; Istanbul mass transit buys more than 1 million RFID tickets; SkyeTek offers RFID solutions for medical inventory management; RadarFind offers temperature-sensing tags; Innovision launches higher-memory NFC RFID chips; Toshiba TEC unveils new RFID modules for printers.
Jun 12, 2008--The following are news announcements made during...
Website:
rfidjournal.com
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
Extended Range RFID and Sensor Tag | NASA
Extended Range RFID and Sensor Tag
August 11, 2011
> Download PDF
An energy-efficient method for increasing the range of SAW RF tags for passive RFID and sensor systems
NASA's Johnson Space Center has developed a novel technology that enhances the performance of surface acoustic wave radio frequency (SAW RF) tags for passive radio frequency identification (RFID) and sensor applications....
Date: 2014-08-06 18:37:02
Website:
https://www.nasa.gov
Related topics : passive rfid tag frequency range / rfid tag range extender / passive rfid tag range / passive rfid tag sensor / rfid tag temperature range
UHF 868/915 MHz Wood Tracking RFID Nail Tag - GAO UAE
Tech Support:
support@gaorfid.com
Home / RFID Tags by Feature / UHF RFID Tags / UHF 868/915 MHz Wood Tracking RFID Nail Tag
UHF 868/915 MHz Wood Tracking RFID Nail Tag
Description
Overview
The Gen 2 UHF wood tracking RFID tag works on the 868 MHz to 915 MHz frequency. These tags have long read range up to 26 feet (8 meters) and a high operating temperature. They are waterproof with...
Website:
https://uae.gaorfid.com
Library RFID Technology Update - chaley102 - Google Sites
Chicago State University
December 9, 2008
It has been ten years since the first RFID system was installed in the National Library of Singapore in 1999. Since then, RFID technologies have been rapidly evolving with advancing technologies. Additionally, falling prices are making RFID more affordable. Mike Monk, Vice President of EnvisionWare says, " EnvisionWare delivered a new price point for...
Date: 2017-02-23 08:58:04
Website:
https://sites.google.com
Related topics : rfid tags library applications / rfid library security gates / 3m library rfid tags / library rfid tags price / library rfid tag cost
Extended Range RFID and Sensor Tag - Fuentek
An energy-efficient method for increasing the range of SAW RF tags for passive RFID and sensor systems
NASA's Johnson Space Center has developed a novel technology that enhances the performance of surface acoustic wave radio frequency (SAW RF) tags for passive radio frequency identification (RFID) and sensor applications. This innovation significantly extends operational range without...
Website:
http://www.fuentek.com
The Different Types of RFID Systems - Bright Alliance ...
Every RFID system can be broken down by the frequency band in which it operates. Whether it is low, high or ultra-high frequency - there are many other categories of RFID systems as well. However, there are two major categories of RFID systems - active and passive, and we are explaining each of their types and frequencies below.
RFID Frequencies
The frequency refers to the size of the radio that...
Website:
http://www.batlgroup.net
433 MHZ. RFID Asset Tag Active
433 MHZ. RFID Asset Tag Active - Request Further Information About this Product
433 MHZ. RFID Asset Tag Active - Overview:
An internal battery powers The Wavetrend series of Active Asset Tags. The Asset Tag will, for the duration of its life, transmit a Radio Frequency (RF) signal at a pre-set time-interval. The Tag life is estimated at 5 years at a transmission time interval of approximately 1.5 seconds. The life span of the Tag ends when the battery life is exhausted. Battery status can be inferred by interrogating the internal Tag Age Counter Value.
The transmitted Tag data includes Customer Site Code (CSC), Tag ID,...
Website:
http://www.gaorfidassettracking.com
Related topics : 433 mhz active rfid tags / active rfid asset tags / active rfid tag battery life / 433 mhz rfid tag / 433 mhz active rfid
NASA - Extended Range RFID and Sensor Tag
> Download PDF
An energy-efficient method for increasing the range of SAW RF tags for passive RFID and sensor systems
NASA's Johnson Space Center has developed a novel technology that enhances the performance of surface acoustic wave radio frequency (SAW RF) tags for passive radio frequency identification (RFID) and sensor applications. This innovation significantly extends operational...
Date: 2013-07-03 13:23:09
Website:
https://www.nasa.gov
Small RFID Laundry Tags With Big Benefits - Barcode.com
Small RFID Laundry Tags With Big Benefits
Small RFID Laundry Tags With Big Benefits
Tweet
Amsterdam (The Netherlands), 4 November, 2014 - RFID technology leader SMARTRAC has launched its new LAUNDRY TAG at the CARTES SECURE CONNEXIONS 2014 tradeshow in Paris. Designed for the rough environmental conditions found in the laundry management industry, this new thin RFID tag (Ø 16.1mm / 0.63")...
Website:
https://barcode.com
Mini UHF Passive Tags with accurate Tracking Performance
Operation at 860MHz to 960MHz, the small UHF passive tag is designed for animal tracking, such as dogs and cats, etc. With special plastic material and advanced RFID technology, the durable passive RFID tags can provide a useful life for more than 10 years to keep the investment low.
The mini UHF...
Website:
wireless.electronicspecifier.com
Related topics : passive uhf rfid tag range / passive uhf rfid tag / high temperature passive rfid tags / mini passive rfid tag / passive rfid tag uses
Confidex Corona – High temperature RFID tag
180 minutes in 230° C -
not a problem for Corona[TM].
10 years of harsh environment RFID tag development with Volvo - for the benefit of automotive industry
Confidex Corona[TM]
Build your car around it
Throughout the production line, you'll need just one RFID tag. Confidex Corona[TM] will carry your vehicle's DNA from welding to painting process and on to the finished...
Website:
confidex.com
Related topics : high temperature rfid tag for industrial environment / very high temperature rfid tags / high temperature rfid tags / rfid tag production process / rfid tag size
Atlas RFID Solutions Active vs. Passive RFID
Active vs. Passive RFID
When do I need to use Active RFID? Or will Passive RFID work just as well?
Active RFID and Passive RFID are fundamentally different technologies that are often evaluated together. While both use radio frequency energy to communicate between a tag and a reader, the method of powering the tags is different. Active RFID uses an internal power source (battery) within the tag to continuously power the tag and its RF communication circuitry, whereas Passive RFID relies on RF energy...
Website:
http://www.atlasrfid.com
Related topics : rfid active reader passive tag / active rfid tags vs. passive rfid tags / difference between passive and active rfid tags technology / active vs passive rfid tags / difference between active rfid tag and passive rfid tag
Physical and Data Link Layer Protocols - RFID and Mobile ...
3) CDMA
�
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
Why RFID? | Confidex
How to select the right tag?
Confidex tags are compatible with most UHF RFID hardware.
There is a huge variety of different kind of tags available with different properties. And remember, they all are compatible with any Gen2 reader. Reader devices and tags can be selected totally independently based on other requirements in your application.
So, what should you take into account? Read on »
How...
Website:
confidex.com
Related topics : a small passive uhf rfid tag for metallic item identification / antenna design for uhf rfid tags / uhf rfid tags frequency / uhf rfid tags metal / uhf passive rfid tag reader
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
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
Passive Sensor Tags to Surpass 5 Million Units This Year ...
IDTechEx research finds that passive UHF and NFC sensor tags are dominating the RFID sensor market, while battery-assisted sensor tags are also seeing market growth as a relatively low-cost IoT solution.
By Claire Swedberg
PDF Email Print Definitions Save Article
Nov 08, 2017--
Sensor-based passive RFID tags have been on the market for just a few years, but according to U.K.-based market-research...
Website:
http://www.iotjournal.com
Strapable Metal Mount RFID Tag - William Frick
Up to 8-ft read range
IP68 Water and dust resistant
Small, compact and highly impact-resistant
Ideal for plastics, glass, woods and metals
�
�
�
Use the SmartMark[TM] WF-SM-BT-2 RFID tag from TROI whenever you need to quickly secure an RFID tag onto objects with a diameter of 2" or larger. The strap-mount design lets you easily affix the tag using a 1/2" steel, stainless steel or plastic banding strap. Button-sized tag occupies minimal space. Use on pipes,...
Website:
fricknet.com
Related topics : metal mount rfid tag / high temperature rfid tag for industrial environment / rfid tag for metal / rfid metal tag / rfid tags uses
Locatable-Body Temperature Monitoring Based on Semi-Active ...
1 School of Electronic and Information Engineering, Tianjin University, Tianjin 300192, China; E-Mails: nc.ude.iaknan@iewgnauguilhb (G.L.); nc.ude.ujt@60gnehs_eix (S.X.)
2 Nankai University Binhai College, Tianjin 300270, China
3 School of Electronics and Information Engineering, Tianjin Polytechnic University, Tianjin 300160, China; E-Mail: nc.ude.upjt@gniyilnehc
* Author to whom correspondence...
Website:
https://www.ncbi.nlm.nih.gov
RFID Technology In Retail | Retail Technology Review
Apr 10, 2008 Critical Issues Comments (0)
Imagine a technology that could slice the time it takes a retailer to measure inventory, one that could provide accurate information about a single tem as it moves from manufacturing through a store and then on to post-sales support. Imagine one that could finally fully automate checkout, freeing store personnel to provide increased levels of customer...
Website:
http://retailtechnologyreview.com
RFID Technology In Retail | Retail Technology Review
Send to friend
Imagine a technology that could slice the time it takes a retailer to measure inventory, one that could provide accurate information about a single tem as it moves from manufacturing through a store and then on to post-sales support. Imagine one that could finally fully automate checkout, freeing store personnel to provide increased levels of customer support.
Welcome to RFID, a...
Website:
http://www.retailtechnologyreview.com
Related topics : rfid tag tracking system / rfid based inventory tracking system project / rfid based inventory tracking system / rfid inventory tracking system cost / rfid tag inventory system
Applications for Active RFID and Passive RFID Technology ...
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RFID technology is divided into three categories - Passive, Semi-passive (also called battery assisted passive or BAP) and Active - based on how the tags obtain power and how they use it to communicate with the interrogator. More technical details regarding differences between these three categories are discussed on our Explore Portal .
What are the technical differences?
The passive...
Website:
http://rfid4u.com
Related topics : passive rfid tag read range / passive rfid tag frequency range / difference between passive and active rfid tags technology / passive rfid tag uses / passive uhf rfid tag range
Specimen Tracking System | Sample Tracking System
Lab Accuracy for Patient Safety.
Track samples in real-time to enhance productivity!
Talk To An Expert
What�can our RFID Specimen Tracking do for your Laboratory?
The GAO Specimen Tracking System is a complete solution that tracks specimen samples in real-time as they are collected and progress through the delivery cycle to their destination laboratories. Once securely received, the specimen...
Website:
gaorfid.com
RFID Technology In Retail | IT Reseller Magazine
Send to friend
Imagine a technology that could slice the time it takes a retailer to measure inventory, one that could provide accurate information about a single tem as it moves from manufacturing through a store and then on to post-sales support. Imagine one that could finally fully automate checkout, freeing store personnel to provide increased levels of customer support. Welcome to RFID, a...
Website:
http://www.itrportal.com
Related topics : rfid based inventory tracking system project / rfid based inventory tracking system / rfid inventory tracking system cost / rfid tag tracking system / rfid tag inventory system
Evigia Systems | Long-range, Rugged Active RFID Tags with ...
Evigia EV3 Active RFID Tags with Integrated Sensing
Rugged long-range tracking and data storage RFID tags
Evigia's tag products are battery-powered RFID devices built and ruggedized for long term use in active RFID networks. These tags store and provide information on the location, security status and environmental conditions of assets in the supply chain through the use of unique identification....
Website:
http://www.evigia.com
Related topics : long range active rfid tags / active rfid tag frequency range / active rfid tag uses / active rfid tag range / active rfid tag battery life