RFID Tags
What are micro-electro-mechanical systems (MEMS)?
MEMS (micro-electro-mechanical systems, which are smaller than microscopic dust mites) have been used for several decades in everything from inkjet […]What is a chipless RFID tag?
“Chipless RFID” is a generic term for systems that use RF energy to communicate data but don’t store a serial […]I’ve heard that RFID doesn’t work around metal and water. Does that mean I can’t use it to track cans or liquid products?
Low- and high-frequency tags work better on products with water and metal. In fact, there are applications in which low-frequency […]Who are the leading RFID tag vendors?
There are many different RFID vendors with different areas of expertise. Some make active tags. Some make passive tags. Some […]How much information can an RFID tag store?
It depends on the vendor, the application and type of tag, but typically a tag carries no more than 2 […]What’s the difference between read-only and read-write RFID tags?
Microchips in RFID tags can be read-write, read-only or “write once, read many” (WORM). With read-write chips, you can add […]What’s the difference between passive and active tags?
Active RFID tags have a transmitter and their own power source (typically a battery). The power source is used to […]What is the read range for a typical RFID tag?
There really is no such thing as a “typical” RFID tag, and the read range depends on whether the tag […]What is tag collision?
Tag collision occurs when more than one transponder reflects back a signal at the same time, confusing the reader. Different […]