If you find your PIN difficult to remember, or you think someone else knows it, you can easily change it to one that's more memorable at a Barclays cash machine, or the cash machine of many other banks in the UK. You'll need to insert your card and enter the current PIN. Select 'PIN services' from the menu, and then the 'Select a new PIN' option. Choose a PIN that won't be guessed by someone else, and avoid using simple number patterns, e.g. 1111, 1234, etc.
If you've forgotten your PIN, you can view it in Barclaycard online servicing, by selecting 'View your PIN securely', which you'll find under 'Your details' in the top menu.
Log in to, or register for Barclaycard online servicing.
Don't forget, if you think someone else knows your PIN, you need to change it immediately at a Barclays cash machine, or at a cash machine of many other banks in the UK.