FIELD: physics.
SUBSTANCE: method for comprehensive inspection of people at checkpoints includes identification based on hand shape and an access code and gas analytical detection of trace amounts of hazardous substances, wherein the beginning of inspection includes personal identification based on a digital code, performing biometric verification of the identity based on hand shape while simultaneously inspecting the hand position on a sampling plate, which includes reading hand parameters and comparing hand parameters obtained from scanning with reference values stored in the database of an inspection and access control system; after removing the hand from the sampling plate, before the beginning of gas analysis, the region where the hand was located is insulated with a protective cover; a gas analyser then automatically moves towards the sampling plate, after which the sampling plate is heated to a certain temperature, and the vapour of the left traces enters the gas analyser; the comprehensive inspection result is sent to the inspection and access control system.
EFFECT: automation and high efficiency of detecting trace amounts of controlled substances on hands, high sensitivity and reliability of detecting trace amounts of substances coupled with biometric verification of a person from hand shape.
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