December 2022
Intermediate to advanced
448 pages
18h 28m
English
Content preview from Introduction to Holography, 2nd Edition
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19 Holographic Authentication and Encryption
19.1 Introduction
Authentication is required to verify that an object such as a medical device or pharmacological product is genuine and therefore likely to be safe for prescriptive use. Authentication may also refer to documents such as professional qualifications, licences, credit/debit cards, currency, or concert tickets. Holographic authentication normally involves inclusion of a hologram in a document or attaching a hologram to a product whose authenticity may require verification.
Encryption is designed to ensure that information is inaccessible except to authorised users, and in the present context usually means that the holographic recording method is known ...
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