USB memory / password generator will save headaches

In many companies, a rather harsh corporate policy. Some of these provisions prescribe the need to change all of their working passwords for each period of time (for different companies this period is different). One craftsman got the requirements of his company so much that he built a portable memory / password generator. This generator is able to remember any necessary password (and not give it to an outsider). In addition, the device can generate a new password according to specified criteria.

This device is based on the ATtiny85 platform. As far as can be understood from the video, the idea is really interesting, and the implementation of the idea is the most practical one. How it all works can be viewed in the video below. Well, if you decide to build something similar with your own hands, then it's time to visit the source, where the diagram of the device is shown, plus the source of the software for this “flash drive”.
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Here is the source .