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Posts: 515 | Thanked: 193 times | Joined on Oct 2009
#1
Hi,
Is it possible to copy/clone info from a card, say an travelcard (oystercard) or pass to a building? Basically copy the card/nfc info to the phone allowing you to use your phone instead of the original card? So you can use your phone as a pass/travel pass.

This would be awesome.
 
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Posts: 6,436 | Thanked: 12,699 times | Joined on Nov 2011 @ Ängelholm, Sweden
#2
you can copy and send info, but you can't copy MAC
 
Posts: 1,548 | Thanked: 7,510 times | Joined on Apr 2010 @ Czech Republic
#3
There are basically two types of wireless identification cards - the simple ones that just send a long number once they get near the reader and more sophisticated ones with two way communication that work on the challenge-response principle, where the secret key never leaves the card.

Unsurprisingly, it is very hard to impossible to clone cards of the second sort.
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