Secure mobile user interface

A system for entering data into a mobile device, the system comprising:

• a mobile device case for generating user data to be input by a user;
• and
• a mobile device comprising a display;
• wherein the mobile device case is for holding the mobile device and the mobile device case comprises:
• a microcontroller;
• and
• a plurality of lights to display the generated user data to the user;
• wherein the microcontroller of the mobile device case is configured to:
• receive a request to generate the user data;
• generate said user data;
• and
• control the plurality of lights of the mobile device case, the plurality of lights aligned with a set of characters displayed by the mobile device held within the mobile device case, to flash in sequence to display the user data.

A method for generating user data to be input by a user, the method using a mobile device case for holding a mobile device, the mobile device case comprising a microcontroller and a plurality of lights to display the generated user data to the user, the method comprising:

• receiving, at the microcontroller of the mobile device case, a request to generate the user data;
• generating, at the microcontroller of the mobile device case, said user data;
• and
• controlling, via the microcontroller of the mobile device case, the plurality of lights of the mobile device case, the plurality of lights aligned with a set of characters displayed by a mobile device held within the mobile device case, to flash in sequence to display the user data.