The industry standard for identification number size today is 96 bits. Most of
the tags that house this 96-bit data identifier have a general memory capacity of
256 bits. Currently, passive tags available for use in the global supply chain have
up to 2048 Kbits of storage available. Semi-passive and active tags usually measure
their memory capacity in megabytes of data due to the on-board power.
The source of on-board power may not always be a battery; for instance, it can
be powered from a power source to which a vehicle’s tag is attached.