"Barclays PC Banking uses advanced encryption technology specially licensed from the US Government. This helps to prevent anyone eavesdropping while you’re on-line or reading your bank details. Furthermore, there are two levels of software protection: passcodes and passwords. If your passcode is entered incorrectly three times in a row, the service will be automatically suspended. As an added reassurance, Barclays staff will never ask for your passcode, so there is no need to tell it to anyone over the phone."