My hubby has just tried to use his switch card in a well known superstore and the check out girl told him his pin number was blocked. He said "Hmm strange". She said "Well you've typed your pin number wrong 3 times so you've blocked it". He said "Nope, I've not had my card out of my wallet at all today". At which point, she produced a slip, asked him to sign and let him walk out the door. I remember this happening to me some time back and being quite upset by it then too! OK, it's very nice that the check out lady thinks you've got an honest face and you can actually take your shopping home with you BUT shouldn't she have confiscated the card? Surely if she's faced with a "pin blocked" message, telling her a wrong pin code has been entered 3 times her options should be: Call supervisor (who would have authority to confiscate card if necessary) Call bank (if possible) and confirm customers ID Ask customer for further proof of ID She did none of these things. May be it was small amount of less than £20 that was being charged, but doesn't producing a slip to sign following a blocked pin code make a complete mockery of the system?