La Caixa, one of Spain’s leading banks, has found an alternative to using a credit card when making payments. It is set to launch a smart wristband that is encrypted with the user’s bank card details. Purchases can be made simply by a flick of the wrist against the store’s cash register scanner. The transaction immediately appears through an app on the smartphone. The wristband has an adjustable strap, is waterproof and made from hypoallergenic materials. Customers will also be able to customize the design of their wristband.