h well google beat the foccers
What if I get my PIN wrong?
You have 3 attempts to enter your PIN correctly. If you enter the wrong number 3 times at a shop, restaurant or business – even if they’re at separate locations – your PIN will be locked. You won’t be able to use it until you unlock your PIN at a Barclays cash machine through the ‘PIN services’ option – assuming you’ve subsequently remembered your old PIN.
Although I'm positive I used the right pin in my pin sentry thing