Made to slip onto straps and bands of 22mm or slimmer, the Loop isn't exclusive to Barclays customers. Like the other bPay devices, it draws from a mobile wallet accessible online or through a companion mobile app, and you can add funds from any debit or credit card with Visa or MasterCard on the front. You can also set the wallet to top-up automatically when it's starting to look tapped out.

Because the Loop offers no kind of active authentication, though, the max you can spend in one hit is limited to £30. Available to buy online today for £20, the Loop will also be plugged by Garmin and watchmaker Mondaine with some of their products. What will Barclays think of next, eh?