CPC H04L 9/0637 (2013.01) [H04L 9/3247 (2013.01); H04W 4/80 (2018.02); H04L 2209/80 (2013.01)] | 20 Claims |
1. A method comprising:
determining a blockchain transaction generated by a processing device set up for short-range communication; and
generating, using the blockchain transaction, a signed blockchain transaction using:
a secure computing device arranged in an area,
wherein the signed blockchain transaction indicates a presence of the processing device in the area.
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