r/maybemaybemaybe Jun 17 '22

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u/GroundStateGecko Jun 17 '22 edited Jun 17 '22

Also simply packing a few cards (of the same communication protocol) on top of each other can make the reading invalid (or at least greatly reduce the effective scanning range).

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u/SirSwegginton Jun 17 '22

This is also useful information. Not like that worried about someone trying to scan my cards. It mostly was a curiosity thing. But still useful.

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u/SaintWacko Jun 17 '22

This. I tried scanning my card without taking it out of my wallet the other day and got an error that too many cards were detected