Tamper-evident technology
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Tamper-evident describes a device or process that makes unauthorized access to the protected object easily detected. Seals, markings, or other techniques may be tamper indicating.
Tamper-evident currency bags have a seal that reveals if the bag has been tampered with
A foil inner seal on an induction sealed bottle
A Cream of Tartar spice container with a broken safety seal.
Sealing wax
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Sealing wax is a wax material which, after melting, hardens quickly, forming a seal that is difficult to break without noticeable tampering. Wax is used to verify that something such as a document is
Tamper-evident technology
…and restore the packaging to its original untampered condition. Tamper-evident designs have been a feature of letters since ancient times, often using wax, clay, or metal seals to signify that the letter had not been opened since it was written. Ancient Roman signet rings, for example, were unique to the…
Letters sealed with wax in a painting from 1675 by Cornelis Norbertus Gysbrechts
A donor portrait by Petrus Christus, c. 1455, showing a print attached to the wall with sealing wax
Wax seal displaying the Fonseca Padilla family arms
Personal seal of William Stoughton (judge) with his coat of arms, as it appears on the warrant for the execution of Bridget Bishop for witchcraft in Salem, Massachusetts, in 1692