Forgery-Proof Locking Stripe
Original Publication Date: 1987-Nov-01
Included in the Prior Art Database: 2005-Feb-02
Forgery-proof locking stripe 1 is used to attach cover 21 and base 22 of an apparatus, such as a cryptographic terminal, and to make visible any tampering. Locking stripe 1 is made of plastic and comprises, as shown in Figs. 1 and 2, cylindrical guide bolts 2 and self-locking snap bolts 3. Bolts 2, if inserted into holes 23 in the wall of cover 21 and holes 24 in the wall of base 22, prevent vertical separation of cover and base. Snap bolts 3 are positioned in a thinner area 4 (not visible from the outside 7) of stripe 1. If snap bolts 3 are inserted into holes 5 in cover 21, their elastically deformable hooks 6 snap behind cover wall 21, keeping stripe 1 self-locking. Stripe 1 can only be removed from the wall of cover 21 by destruction, so that any tampering would be readily visible.