Glossary of Tax Stamp Terms
There are 69 entries in this glossary.L
| Term | Definition |
|---|---|
| Level 1, 2 and 3 security features |
a commonly-used means of grading security features. Level 1 refers to features that can be verified by the public and untrained examiners with the naked eye. Level 2 refers to covert features and are typically deployed for use by , for example, retailers, inspectors or customs officials. Level 3 refers to features that can only be identified under forensic examination in laboratories and used by manufactures themselves to provide 100% identification of on of a product eample, cahsiers in banks or disbitus or retailer of branded toodseatuers that need a took or kit to be verified (raning from simple |
| Lock and key |
a system of encryption whereby something (the ‘key’) is required to decode the message. The ‘key’ is usually a handheld device which renders meaningful that which was previously unintelligible. Possession of the key is restricted to certain individuals thereby limiting access to the encrypted information. |
| Luminescence |
a collective term for the effects of colour change or other visible characteristics under different sources of illumination. Examples include fluorescence (which has a short-lived emission when excited by UV light) and phosphorescence (which also appears under UV light, but continues to glow after the light source is removed). Inks, threads and fibres displaying these characteristics are commonly used for security documents. |