RF tag (RFID tag, IC tag, Radio wave tag) is composed of a memory for ID ,which is written at manufacturing and is non-rewritable, to use the individual identification and a user area ,which can be rewritten by the user. There is various type of memory capacity including the large capacity type on the market. The large memory capacity type is more expensive in general but the cost depend on the purchase volume.
RF tag, including RFID tag, IC tag, electronic tag, wireless tag, and contactless tag, has two memory areas. One is an unrewritable area with its ID that was written when manufactured, and the other is for users to write or rewrite.
RF tag has ITF memory, EPC memory: UII, USER memory: user memory, RESERVED memory, and these features are explained below.
TID memory: It can be read but cannot be written as this memory area is written when manufactured.
EPC memory, UII: This area is to store EPC, an identification code for writing on a GS1 standardized tag. Users can rewrite it. In fact, there are a lot of RF tags without the USER area, so it is used to write own code.
USER memory: this area can be written freely by users. It can hold expiration dates, individual identification numbers, and etc necessary for operation.
RESERVED memory: this area stores a password to restrict access to the area, which to make the tag view-only or disabled and etc.
There are many different sizes of capacities, and the memory has larger capacity is available.
The large memory capacity type is more expensive in general, but the cost may vary depending on the purchase volume.
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