What Is a Security Seal?
A security seal is a tamper-evident mechanism designed to change irreversibly once it’s peeled off or opened. This feature is crucial for preventing tampering, forgery, unauthorized reuse, and opening, thereby ensuring the integrity and security of the sealed item.
There are three main types of security seals:
- Residue-type seals: These leave a residue on the surface when removed, clearly indicating tampering.
- Transfer-type seals: These reveal markings on the peeled surface upon removal.
- Non-transfer-type seals: These display markings on the seal itself but do not leave residue on the applied surface.
Once removed, these seals cannot be restored to their original state, making it easy to identify if the seal has been compromised. They are widely used in various fields, such as preventing foreign object contamination in food and pharmaceuticals, securing precision equipment against unauthorized modification, and safeguarding important items or company assets, like restricting unauthorized USB port use.