4 ms·
Couldn't each RFID tag have a UUID that maps to some in-house database to decode them to their actual card value? Each card/deck would essentially be "unique" a
by sixstringtheory 7y ago
Couldn't each RFID tag have a UUID that maps to some in-house database to decode them to their actual card value? Each card/deck would essentially be "unique" and if you read the tags all you'd know is that your opponent is holding cards B8BB148A-1BA4-493D-A9C4-884A2AAA4491 and 1534DE97-B227-4292-817E-01112B9BC1E5.
What am I missing?
- ladberg 7y agoUnless you never reuse a single card, then whoever is scanning the cards can know what a card is if it's played again.
- duskwuff 7y agoCould be worked around by rolling the IDs every time cards go through the shuffler. That's beyond the capability of most commercially available RFID tags, though.
- splonk 7y agoUsually only two decks are used at a table, one for the current hand, and one in the shuffle machine. That's only 104 unique tags. Decks tend to be changed out only every few hours at most, because it delays the game (new decks are visually verified by spreading them on the table to see that they contain every card).
- kyberias 7y agoThe vulnerability probably wasn't in the cards. That is, the cheater could not read the card RFIDs directly. It is more likely that he has been able to access, in real-time, the system reading the cards and storing the card values.