SENSOR DEVICE FOR DATA INPUT Russian patent published in 2014 - IPC G06F3/41 G06F3/02 

FIELD: information technology.

SUBSTANCE: sensor device for data input includes a transparent touch screen and a display behind said touch screen, connected to a control device, capable of randomly distributing characters and corresponding functions on an input field for each code input session. To limit the angle of view of images of characters, an insert is placed between the touch screen and the display, said insert having optical channels, wherein for each character displayed on the display, the number of optical channels N is selected such that N≥1, and the length of each optical channel, the linear dimension of a section of the field of the display in the channel to be viewed, as well as the linear dimension of the opening of the optical channel on the side of the touch screen should be in a defined ratio.

EFFECT: more secure input of a personal user identification code when using electronic devices.

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