[Barclaycard] Where is my merchant interface located?

Barclaycard uses the same merchant inteface software as PostFinance and Ingenico ePayments.

Some functions of the merchant interface work incorrectly with the Google Chrome’s password manager because of low professional skills of the merchant interface developers.
Particularly, the merchant interface can show a wrong value (your merchant interface password) for the «SHA-IN pass phrase» «SHA-OUT pass phrase» fields.
Please use another browser (not Chromium-based, e.g., Mozilla Firefox) for the merchant interface, and do not use your browser’s password manager at all for the merchant interface website.