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RFID Tags
RFID Class-1 Generation-2 (“Gen-2”) tags are used for item level identification in retail environments. “Class-1” refers to the functionality of the tag while “Gen-2” refers to the physcial and logical standards of tag and the encompassing system. These standards are maintained by EPCglobal. “Gen-2” standards were adopted in December of 2004 and offer many advantages over “Gen-1” such as: – An interoperable, global standard – Faster and more flexible read speeds – Faster, more accurate performance through the use of advanced anticollision protocols – An easier way to deploy many readers at one time to end users – Enhanced sercuirty and privacyRFID tags are classified as Class 0 through Class 5, depending on their functionality:
| Class 0 | UHFl read-only, preprogrammed passive tag |
| Class 1 | UHF or HF; write once, read many (WORM) |
| Class 2 | Passive read-write tags that can be written to at any point in the supply chain |
| Class 3 | Read-write with onboard sensors capable of recording parameters like temperature, pressure, and motion; can be semipassive or active |
| Class 4 | Read-write active tags with integrated transmitters; can communicate with other tags and readers |
| Class 5 | Similar to Class 4 tags but with additional functionality; can provide power to other tags and communicate with devices other than readers |
