UHF   UID
Ultra High Frequency: transmitting between 300 MHz and 3 GHz. Typically UHF RFID tags operate in a region between 860 MHz to 960MHz. At present, there is no universally approved global frequency for UHF RFID use.
 
Unique Item Identifier, a value in the Item Unique Identification system used by the US Department of Defense for the identification of accountable equipment as per DoD Instruction 5000.64.
 
UPC   UPC-A
Universal Product Code. The standard bar code type for retail products in the United States . See also UPC-A and UPC-E.
 
A fixed length, numeric, continuous bar code type used primarily in the retail industry for labeling packages. The UPC-A symbol encodes a number system character, 10 digits of data, and a Mod 10 check digit for error correction.
 
UPC-E   UPCC
A UPC symbol encoding six digits of data in an arrangement that occupies less area than a UPC-A symbol. The UPC-E bar code type is a shortened version of the UPC-A bar code type in which zeroes are suppressed, resulting in codes that require less printing space. Used for labeling small items.
 
A compliance marking term. Uniform Product Carton Code, a standard administered by the UCC.
 

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