Network access security device
The Product:
Low-cost battery powered device the size of a credit card which generates and
displays a pseudo-random number once a minute. An even smaller version fits on a
keychain.
Our customer's need:
Redesign the existing product to use a newer, lower cost microcontroller.
Our solution:
Use a 4-bit controller which draws only a couple of microamps. Port the
code over to the new processor. Add some features and fix some longstanding bugs in
the process. Consume little current, allowing the product to operate for over 5
years on a single Lithium button-cell battery.
Our involvement:
Complete electronics and firmware design. We also developed a PC-based
tester to support SQA's design verification.
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