| O |
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| OCR |
Optical Character Recognition |
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| OTP |
One Time Programmable Memory |
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| Oersted |
The unit of magnetic force in the centimeter, gram, second
system of units. A unit of magnetic coercive force. Also used to
define relative difficulty of erasing magnetic material. |
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| Off-line Authorization |
Authorization of a transaction carried out under off-line operation. |
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| Off-line Operation |
For terminals, operation without direct connection to a computer
or data communication network. |
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| Off-line Processing |
Processing carried out under off-line operation |
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| On-line |
Direct access to computer-based data files and operations systems
via computer terminals. |
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| On-line Authorization |
Authorization of a transaction carried out under on-line operation. |
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| On-line Processing |
Processing carried out under on-line operation. |
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| Opencard framework |
An architecture for cards and terminals primarily intended
to standardize the development of smart card and terminal applications
in network computers. |
Visa |
| Open System |
A card System that involves multiple issuers of cards that
can be used to access services or purchase products at multiple
service providers. An open system requires the processing of interchange
transactions, usually by an independent “system operator”. |
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| Open System Interconnection (OSI) |
An international standard describing the interaction of computer
systems through communication link characteristics by allocating
the information functions into seven distinct layers. |
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| Optical Character Recognition |
(OCR) Character fonts that are machine readable by optical
techniques. |
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| Optical Fibre |
A transmission medium in the form of fibre made of optical
glass, which conveys coherent light on which digital signals are
modulated. |
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| Optical Memory Card |
Also known as laser cards, because a low-intensity laser is
used to burn holes of several microns in diameter into a reflective
material exposing a substrata of lower reflectivity. The presence,
or absence, or a burned hole represents bits. the areas of high
and low reflectivity are read using a precision light source. |
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| Optical Recording Layer |
Layer used for recording data on an optical card |
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| Optical Stripe |
The area on an optical card where the optical writing and reading
of digital data takes place. |
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