DEVICE FOR IDENTIFICATION OF OPERATOR Russian patent published in 1997 - IPC

FIELD: computer engineering. SUBSTANCE: device has password memory unit 1, comparison circuit 2, flip-flop 3, keyboard 4, OR gate 5, register 6, OR gates group 7, AND gate group 8, register 9, delay gate 10, AND gate group 11, AND gate group 12, function generator 13, OR gate 14, register 15, counter 16, delay gate 17, AND gate group 18, OR gate 19, clock oscillator 20, flip-flop 21, AND gate 22, differentiating circuit 23, OR gate 24, diode 25, resetting input 26, output line 27, error output 28. Personal password is subjected to non-linear conversion which is hard to reverse in function generator. Result of converting is compared to reference string which is stored in memory unit. System resources are opened for access in case of matching. EFFECT: increased complexity of unauthorized access to resources of computer. 1 dwg