| 摘要 |
The present invention provides a security seal of the type comprising a length of wire which has been so made that when a seal is made by twisting at least one end around the other end an attempt to untwist said at least one end is substantially likely to result in fracture of the wire characterized in that there is applied to the region of said at least one end which is to be twisted a material which, if heat is applied to said region in sufficient quantity such that the wire is likely to be rendered sufficiently ductile such that said at least one end may be untwisted without fracturing, by itself or with the wire will result in the security seal exhibiting a perceivably different appearance as compared to if such heat had not been applied.
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