Suppose you are writing a survey application and would like to somehow guarantee that the results are safe from the user's point of view. Simply put, I know what IP you came to, but I want you to sleep well at night, knowing that I know nothing about your answers. I can not store IP in raw form.
I need to guarantee 1 thing, though, that you answer the questions once. Therefore, as soon as your computer comes with some data, I need to admit that your computer has already responded to the survey.
Any suggestions on how to best deal with this?
Thanks -mac
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