Behind oled authentication

A device for authenticating a user of the device to perform at least one operation on the device that requires authentication, the device comprising:

• at least one flood illumination source configured for emitting infrared flood light;
• at least one pattern illumination source configured for emitting at least one infrared light pattern comprising a plurality of infrared light spots, wherein the number of infrared light spots is below 4000 spots;
• at least one image generation unit configured for generating at least one pattern image while the pattern illumination source is emitting the infrared light pattern and configured for generating at least one flood image while the flood illumination source is emitting infrared flood light;
• at least one display, wherein the infrared light pattern traverses the display while being illuminated from the pattern illumination source and/or the infrared flood light traverses the display while being illuminated from the flood illumination source, wherein the display of the device is at least partially transparent in at least one continuous area covering the pattern illumination source, the flood illumination source and/or the image generation unit, and
• at least one authentication unit configured for performing at least one authentication process of a user using the flood image and the pattern image.

A method for authenticating a user of a device to perform at least one operation on the device (110) that requires authentication, the device comprising a display and the method comprising:

• a. illuminating the user with at least one infrared light pattern from at least one pattern illumination source of the device;
• b. illuminating the user with infrared flood light from at least one flood illumination source of the device;
• c. generating at least one pattern image with an image generation unit of the device showing the user while the user is being illuminated with the infrared light pattern, and generating at least one image with an image generation unit of the device showing the user while the user is being illuminated with the infrared flood light, wherein the display of the device is at least partially transparent in at least one continuous area covering the pattern illumination source, the flood illumination source and/or the image generation unit;
• d. identifying the user based on the flood image by using at least one authentication unit of the device;
• e. extracting material data from the at least one pattern image by using the authentication unit;
• and
• f. allowing the user to perform at least one operation on the device that requires authentication based on the material data and the identifying.