Are the data elements marked on an item for unique identification required to be machine-readable?
Yes. The UID component data elements, at a minimum, shall be contained in a Data Matrix ECC200 symbol so that an AIT device can be used to read the data elements and construct the UID. Data may be contained in other AIT media (e.g., contact memory buttons, linear bar codes, radio frequency identification, etc.) in addition to the Data Matrix. Where space is available, human readable information for UID data elements should also be marked on the item.