CODE PANEL Russian patent published in 2008 - IPC E05B47/00 

FIELD: safety devices, particularly adapted to protect different objects against intrusion and to provide lock secrecy along with prevention of unauthorized code input.

SUBSTANCE: code panel comprises reading unit linked to executive mechanism controller and including a number of sensors sensitive to physical field and installed to provide field cooperating with coded key. The coded key includes point sources of physical field to be detected by sensors. The sensors are arranged in single plane, in points of grid having the same cells, which are defined by equilateral triangles. Coded key comprises at least two point physical field sources spaced apart a distance divisible by distance between grid points. Distance between said point sources is preferably equal to distance between grid points. The point sources are constant magnets. The sensors are magnetosensitive ones connected to non-magnetic substrate. The point sources are constant magnets of the same or different polarities, electric power source provided with two electric connectors or optical emitter.

EFFECT: the sensors are electric contacts isolated one from another or photosensitive sensors.

6 cl, 3 dwg