I have this use case:
- The quiz consists of a single question.
- When participants opens this question a sequential number is generated in the order the participant entered and a username is constructed out of it. For example, the first to enter is assigned user001, the second user002, and so on.
- A fingerprint of this username is taken. Anything simple, say the first 8 bytes of its MD5 hash..
- The question requires no answers. The participant can still check the "answer". Then he'll be shown the username and the hash..
- When the participant revisits the question any time in future, the quiz always brings the same username and the hash.
Is this possible?

