The gadget will make it impossible to carry out any big online banking transaction without confirming your identity with a fingerprint scan.

For example, consider a typical banking transaction that involves moving $700 from a customer's savings account to a customer's checking account.

This can be used to confirm the identity of a user before sending sensitive information, such as on-line banking transaction history.

The customer needs to enter that code to verify major app and online banking transactions.

It found that many customers had to use other post office branches for services such as driving licences, passports, some bill payments and banking transactions.