Tamper-evident Security Seals

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.

tamper evident security sealsSecurity seals are commonly employed on devices like electronic voting machines in an attempt to detect tampering. However, testing by Argonne National Laboratory and others demonstrates that existing seals can usually be quickly defeated by a trained person using low-tech methods.They offer ideas on countermeasures, and are exploring the promising option of "anti-evidence" seals.

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