In yesterday’s post I provided information about three different types of RFID readers and what they’re designed for. As promised, today I’m going to provide some fast facts about the different types of RFID tags. RFID tags come in several varieties with different abilities, memory and power requirements. The following list provides a brief description of several different types of RFID tags:
Active RFID Tags – active tags have an embedded battery that provides power and a radio signal. Although more expensive than passive tags, they possess greater data capacity and range.
Passive RFID Tags – passive tags don’t have embedded batteries like active tags, they get energy directly from radio waves transmitted by a reader. Passive tags hold limited amounts of data and have a shorter read range than active tags.
Read-Only Tags – these tags hold data that is pre-programmed at the factory and cannot be changed.
Writeable Tags – these tags allow users to program, erase and rewrite data many times. Many writeable tags are designed with a partition that defines a certain area of the tag to be read-only, this allows users to permanently encode data that is static, but utilize the writeable portion for changing data.
Many RFID tags are also designed to withstand harsh environments and challenging surfaces.