If the same group of people were to be coming to at exactly the same time often, it would become obvious to a log analysis type program.
On that topic I also wonder if a RFID card reader can recognise that many cards at once.. As the readers don't have a massive range, they would most probably place two of them at each side of the entrance doors to a class, not allowing the cards that were left unread to be recognised.
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If the same group of people were to be coming to at exactly the same time often, it would become obvious to a log analysis type program. On that topic I also wonder if a RFID card reader can recognise that many cards at once.. As the readers don't have a massive range, they would most probably place two of them at each side of the entrance doors to a class, not allowing the cards that were left unread to be recognised.