Device and method for identifying a user

A device for identifying a user including at least one terminal comprising at least one touch screen for displaying information related to at least one transaction or one service, a location for inserting a smart card, a contact and/or contactless smart card reader device, a main circuit board for controlling the functionalities of said terminal and comprising at least one processor and one memory, said memory containing a set of modules and/or algorithms whose execution on the processor implements at least one set of functionalities of said terminal and/or generates at least one interactive interface comprising at least one virtual keyboard, the terminal comprising at least one arrangement for the activation of a low vision mode for partially sighted users wherein:

• a positioning module determines the position of the finger on the touch screen and registers in a first memory the last position of said finger after said user has removed his finger from said touch screen, said last position being defined as a possible choice of the virtual key corresponding to said last memorized position;
• a detection device comprises at least one arrangement for validating the choice of the user by a double-tap gesture of the finger anywhere on the touch screen, the validated choices being registered in one second memory and sorted in order of recording by means of an algorithm so as to constitute a code/PIN used to validate the transaction and/or to trigger a functionality of said terminal,
• wherein the touch screen of said terminal comprises at least one set of embossments that are superimposed on the keys of the virtual keyboard such that the embossments are located around the digits and/or symbols of said keys, said set of embossments including an embossment with a point in the center and located in the center of the first nine keys, comprising digits, of said virtual keyboard displayed by the touch screen so as to allow a user to locate the central key of the virtual keyboard and the other keys around said central key.