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Radio Frequency Identification: Making its Way to Tamper Evident Industry

July 22, 2010

By Nina Ozunal

Known as early as 1940’s, RFID (Radio Frequency Identification) chips have gained an unexpected popularity in the 21st century. A far cry from their early beginnings as espionage tools, they have assumed a more practical and friendly role in the new century.

A popular application is RFID tag. In layman terms, RFID tag is a microchip broadcasting a signal to RFID reader to indicate its position. RFID with data makes it ready to be read. RFID reader’s antenna sends electromagnetic signals into RFID tag range. RFID tag’s antenna receives the electromagnetic signals in the range. By using the power either from reader’s electromagnetic field or its own internal battery RFID tag’s antenna sends radio waves back to the reader. Reader picks up the waves and interprets frequencies as meaningful data.

There are three types of RFID tags:

  • Active
  • Semi-passive
  • Passive

They differ in:

  • Power source
  • Broadcast frequency
  • Broadcast range
  • Production cost.

Active and semi-passive tags use internal batteries. They broadcast at high frequencies from 850 to 950 MHz approximately 100 feet to read. Passive tags do not use a battery. They use the reader as their power source. Range is approximately 20 feet.

In terms of production cost it all comes down to the size. Active and semi-active tags are bigger and more costly to produce. Passive tags are smaller and production costs lower. In average passive tags are produced in 10 to 50 cent range.

Ingenious application and low set up costs make RFID tags ideal for use in:

  • Tracking
  • Security
  • Transportation
  • Logistics
  • Animal identification
  • Inventory systems
  • Department stores
  • Stores (grocery, book, general etc.)
  • Government offices
  • Human identification
  • Passports
  • Schools
  • Universities
  • Museums
  • Social retailing
  • Sports
  • Access management
  • Tracking of persons and animals,
  • Tracking of goods
  • Toll collection
  • Contactless payment
  • Machine readable travel documents
  • Sensor networks
  • Location based services
  • Tracking sport verify authentication
  • Airport baggage tracking logistics
  • Tamper evident security industry

RFID tags are becoming particularly popular in tamper evident security industry. Due to small size, RFID chip can be placed on a tamper evident security bag and transmit the package information to reader. Each security bag has its own data in memory and be programmed with a broad range data.

To find out more about RFID tag tamper evident applications and solutions, contact Terakom Enterprises Inc.

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Categories: RFID
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