Britain's Lloyds Bank has become the latest financial institution in the country to deploy biometric security on its banking app.The biometric upgrade comes after the bank said in July last year that it was mulling a new system where customers tap their contactless payment cards on their smartphones to prove their identity, cutting down the number of passwords they need to use.Halifax, a high-street bank owned by Lloyds Banking Group , has also trialled technology which uses a customer's heartbeat as security authentication for its digital financial services.Steve Hicks, Head of Mobile, said to Finextra: “Touch ID is one of a series of improvements planned in the next 12 months focused around making the banking experience simpler for customers. It is amazing how such a small change, can have such a large impact on our customers mobile banking experience. Over time biometrics will transform the way that customers authenticate with the bank whilst enhancing their security.”