Device and method for identifying a user

A device and method for identifying a user. The device including a terminal including a touch screen with a set of embossments superimposed on a virtual keyboard and displaying information related to a transaction, a contact and/or contactless smart card reader device, a processor and a memory containing a set of modules and/or algorithms to implement the method including activation of a low vision mode by a double-tap gesture on the screen, the searching for the center of a virtual keyboard where an embossment is located, determination of the positions of the other keys from the central key, choice and storage of a desired key by lifting the finger from the touch screen at the position of the desired key, validation of the choice of key made by a double-tap gesture on the touch screen or validation of the code/PIN by a double-tap gesture on the touch screen.