4. Cryptography
  5. By modifying optical image

Katsuhisa Hirokawa

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Card system for collectively loading right of use in predetermin

Registers – Systems controlled by data bearing records – Credit or identification card systems
Patent

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Memory card

Registers – Coded record sensors – Readout control
Patent

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Portable medium

Registers – Systems controlled by data bearing records – Credit or identification card systems
Patent

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Portable storage medium processing system

Registers – Systems controlled by data bearing records – Credit or identification card systems
Patent

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Programmable portable electronic device

Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent

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Profile ID: LFUS-PAI-P-756904

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