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Re:Contactless 'charging errors' at Marks and Spencer by Groxx on Saturday May 18, 2013 @05:02AM (#5728320)
Barring wallets that block radio signals, yes - there are tons of them.

Outside those, I agree, there's quite a large possibility for issues, though this seems weird that it seems to be happening from significantly larger distances than it's designed to work under. To such an extent that I suspect some / all of these people are simply not remembering correctly - they swung their purse between hands, bringing it near the reader, or something. People are forgetful, and this is way way outside what anyone else can replicate that I've seen.

Re:Contactless 'charging errors' at Marks and Spencer by mpclark on Saturday May 18, 2013 @05:33AM (#5728356)
FWIW this will no longer be an issue when everything moves to the user's phone. You'll choose a default 'card' but will be able to change it to a preferred card before any transaction.
Re:Contactless 'charging errors' at Marks and Spencer by Groxx on Saturday May 18, 2013 @05:48AM (#5728379)
yeah, and then you can have real encryption too. I'm hugely in favor of phone-NFC eclipsing cards.