FIELD: physics, signalling.
SUBSTANCE: invention relates to systems for checking for unauthorised penetration and a high security seal which can be used an unlimited number of times since the authenticating part changes randomly each time the seal is opened and when reused. Such a seal consists of at least two authenticators and at least one of them can be moved relative the other in open position. These two authenticators are immovable and stable in closed position. In each new fixed position, the two authenticators are joined to create a new authentication feature which is stored in a database for comparison during verification. This feature will be removed and replaced by another when the said seal is illegally or deliberately opened such that there will be evidence that the seal has been opened.
EFFECT: seal provides high security of objects and can be repeatedly used.
6 cl, 5 dwg
