CPC G06K 19/06037 (2013.01) [G06F 16/9566 (2019.01); G06Q 10/087 (2013.01); G06K 19/06028 (2013.01)] | 21 Claims |
1. A product tag, comprising:
an antenna configured to receive a radio-frequency (RF) signal;
memory configured to store a set of location information specifying different document locations, in which said memory comprises functional inks corresponding to the set of location information;
a control circuit, coupled to the antenna and the memory, configured to:
select location information in the set of location information corresponding to a document location in the document locations based at least in part on the received RF signal, said control circuit harvesting RF energy from the received RF signal to activate or deactivate at least a subset of the functional inks, wherein first location information in the set of location information indicates that a product associated with the product tag is authentic with exposure to the RF signal and second location information in the set of location information indicates that the product is not authentic without exposure to the RF signal; and
present the selected location information.
|