mardi 4 février 2020

How can I make a survey that requires a token, to avoid multiple submissions?

I need to make an online survey to log the responses of about 1000 people. It's important that people do not vote more than once, so no ip check (as they can change it), no account check (multiple accounts), no mac address check (multiple devices).

I thought about generating 1000 different tokens and providing them to the users. If the token is valid, the response is recorded, and the token becomes invalid (so it can't be used again). If the token is not valid, the response is not recorded. Better yet, if the token can be integrated directly into the url that I will send to everyone.

How can I achieve this? Are there any websites that do this?




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