CardTest

CardTest


Out of curiousity I created this demo application to see how much data NFC enabled credit cards give up to a random reader. It turns out they give you pretty much everything you see on the front of the card.
Despite some news reports proclaiming NFC credit cards can be read by passing strangers, in my experience the card has to be in close contact with the back of the phone to get a good read.
Out of paranoia, this app censors credit card info and the content of "track 2 equivalent data" as I would hate to release something that could be used for evil.
This app has only been tested on UK cards, with a Galaxy Nexus so may not work on other credit cards. The app does not save or transmit any of the read data, but you use it at your own risk.

Recent changes:
Version 1.1
- Allow running on Android 2.3.3 devices
(can't test on these older devices sorry)
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Free
70
3.5
User ratings
213
Installs
10,000+
Concerns
0
File size
30 kb
Screenshots
Screenshot of CardTest Screenshot of CardTest

About CardTest
Out of curiousity I created this demo application to see how much data NFC enabled credit cards give up to a random reader. It turns out they give you pretty much everything you see on the front of the card.
Despite some news reports proclaiming NFC credit cards can be read by passing strangers, in my experience the card has to be in close contact with the back of the phone to get a good read.
Out of paranoia, this app censors credit card info and the content of "track 2 equivalent data" as I would hate to release something that could be used for evil.
This app has only been tested on UK cards, with a Galaxy Nexus so may not work on other credit cards. The app does not save or transmit any of the read data, but you use it at your own risk.

Recent changes:
Version 1.1
- Allow running on Android 2.3.3 devices
(can't test on these older devices sorry)

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User reviews of CardTest
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Android Market Comments
A Google User
Jul 3, 2014
Not sure if its safe... Some time after using this app my card got blocked as there was an attempt to pay with my card in US (I'm from UK)... I never gave this card's details anywhere and never payed with it online...
A Google User
Jun 29, 2014
Works with capital one Works with capital one CC, but not a Halifax bank contactless card. It's good to see though how much information the card gives to the reader in stores/shops
A Google User
Jun 25, 2014
Censors critical information The application is useless as long as it doesn't give out the full information. Any malicious user would be able to trivially replicate what has been done here, making this "extra security" completely useless. Once again, non-malicious users are being screwed over while malicious users do whatever they want.
A Google User
May 4, 2014
Does not work Tried on half a dozen cards and would get no read whatsoever
A Google User
Apr 30, 2014
Reads Irish cards