BBC Moneybox - contactless hiccups

Jon Ribbens jon+ukcrypto at
Tue May 21 18:09:23 BST 2013

On Mon, May 20, 2013 at 04:14:06PM +0100, Peter Tomlinson wrote:
> (1) I agree that charging the customer twice **for the same  
> transaction** is an application flaw in the POS device - and it smacks  
> of a major error in POS device certification (may also be a breach of  
> the Merchant Agreement if it really happened - but that it did happen  
> might be an urban myth).

I've personally seen a POS machine print me a "declined" receipt
for a transaction that was actually approved.

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