FIELD: crime preventing and disclosing systems. SUBSTANCE: sets of photodetectors are arranged in porch of house, in doorways at several levels through height, emergency buttons are mounted in staircases and lifts, combination lock and microphone are provided on porch door and privacy locks, on apartment doors, automobile parameter code sensors are installed. When person enters porch, his codes are compared with model numbers entered in computer. Results of comparison are used to determine situation in porch. EFFECT: provision for predicting probable emergency, instantly responding to it, and using data obtained for disclosing the crime. 2 cl
