Validation method for electronic cash cards and digital identity cards utilizing optical data storage

A method of validation of an electronic cash card comprising,

• bonding an optical memory stripe to the card,
• recording optical validation data in a form of visual images on a specific location on the optical memory stripe by forming a plurality of spots in a surrounding field of a reflective layer in a laser recording material,
• recording reference validation data in the card reading device,
• reading optical data in the form of visual images on the optical stripe at the location specified for the validation data by detecting an optical reflective contrast between the surrounding field and the recorded spots,
• comparing the optical and reference validation data in the reading device,
• accepting or rejecting the electronic cash card depending upon whether the optical validation data matches the reference validation data.

A method of validation of an electronic cash card comprising,

• bonding an optical memory stripe to the card,
• recording various versions of optical validation data in multiple locations on the optical memory stripe by forming a plurality of spots in a surrounding field of a reflective layer in a laser recording material,
• recording various versions of reference validation data in the card reading device,
• selecting a specific version of the validation data at selected locations amongst the multiple locations that the various versions of the validation data are stored,
• reading optical data on the optical stripe at the selected locations specified for the validation data by detecting an optical reflective contrast between the surrounding field and the recorded spots,
• comparing the optical and reference validation data in the reading device,
• accepting or rejecting the electronic cash card depending upon whether the optical validation data matches the reference validation data.

A method of validation of a digital identity card comprising,

• bonding an optical memory stripe to the card,
• recording digital optical validation data on a specific location on the optical memory stripe by forming a plurality of spots in a surrounding field of a reflective layer in a laser recording material,
• recording digital reference validation data in the card reading device,
• reading digital optical data on the optical stripe at the location specified for the validation data by detecting an optical reflective contrast between the surrounding field and the recorded spots,
• comparing the optical and reference digital validation data in the reading device,
• accepting or rejecting the digital identity card depending upon whether the optical validation data matches the reference validation data.

A method of validation of a digital identity card comprising,

• bonding an optical memory stripe to the card,
• recording various versions of optical validation data in multiple locations on the optical memory stripe by forming a plurality of spots in a surrounding field of a reflective layer in a laser recording material,
• recording various versions of reference validation data in the card reading device,
• selecting a specific version of the validation data at selected locations amongst the multiple locations that the various versions of the validation data are stored,
• reading optical data on the optical stripe at the selected locations specified for the validation data by detecting an optical reflective contrast between the surrounding field and the recorded spots,
• comparing the optical and reference validation data in the reading device,
• accepting or rejecting the digital identity card depending upon whether the optical validation data matches the reference validation data.