[LINK] paywave cards

Kim Holburn kim at holburn.net
Thu Sep 12 22:38:00 AEST 2013

I just got a new visa card and it's one of those NFC paywave cards.  

I had a quick look online and apparently you can ask your bank to reduce the paywave limit to $1.  

I also got a powerful torch and had a look at what was inside it.  I can see coils and what looks to me like a capacitor.  It's quite complex in there, not like the simple coils I've seen in xrays of RFID cards online.  https://imageshack.us/a/img89/4470/cardswb.jpg

I'll try and get the bank to give me one without the paywave first, and if not limit it second but I still resent carrying around a card that will respond to a radio signal without me being aware of it.

I'm pretty sure a very small hole drilled through the card at a particular spot would take out the paywave leaving the chip and mag stripe unscathed but would it still be valid?  Perhaps not noticeably invalid.

Kim Holburn
IT Network & Security Consultant
T: +61 2 61402408  M: +61 404072753
mailto:kim at holburn.net  aim://kimholburn
skype://kholburn - PGP Public Key on request 

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