On Wednesday, 7 March 2018 15:03:54 UTC, Martin Brown wrote:

Looks to be identical to the Nationwide one apart from the colour of the
plastic and the type of cards it will accept. They are annoyingly brand
specific so you can't just use another banks - it says "wrong card".

Not always. I used my Barclays one yesterday to validate a Lloyds
transaction.
John