[LINK] RFI: PayWave/PayPass Contactless Chip Cards

[Roger Clarke]

>On 11/04/2012 3:33 PM, Roger Clarke wrote:
>>   2. The contactless chip that
>>   supports Visa PayWave and MasterCard PayPass is embedded in the card
>>   (along with the induction coil), and can't be seen.

At 16:20 +1000 11/4/12, Stephen Wilson wrote:
>Actually no, it's all in the one chip now.  A single "dual interface"
>chip talks to the outside world through either the gold plated contacts
>you see on the surface, or an antenna buried in the plastic.  Scratching
>off the contacts need not affect the wireless channel.  ...

Damn!

I *knew* I should've updated myself more frequently than once per 5-8 
yrs  (:-(}

Steve, what's the robustness of the antenna / coil like these days, 
and of its connection to the chip?


-- 
Roger Clarke                                 http://www.rogerclarke.com/

Xamax Consultancy Pty Ltd      78 Sidaway St, Chapman ACT 2611 AUSTRALIA
                    Tel: +61 2 6288 1472, and 6288 6916
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Visiting Professor in the Faculty of Law               University of NSW
Visiting Professor in Computer Science    Australian National University