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Structured magnetic media for data security

Structured magnetic media for data security

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A method is described of structuring or ‘freezing’ digital encoding into a magnetic tape so that it is permanent and non-erasable. It is then shown how normal or ‘soft’ magnetic encoding can also be recorded on such a tape, and ensure the integrity of the normal encoding. It is further shown how structured tape may be fixed to the cards and documents to make them secure and machine readable.

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