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I'm using Google Docs to host a simple survey and I noticed that the same person can keep filling out the survey over and over again. How do I stop users from doing the survey more than once? Is it possible to block multiple survey responses per user? |
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No inbuilt feature as such but there is of course a workaround by which you create a special token question and provide each customer with a unique token they have to enter into the form. You can then filter the results on valid tokens only and e.g. use only the first or last form submit with a valid token. The drawback is that you will have to create a way (Google Apps Script comes to mind) to send each customer an e-mail with the unique token and the link to the form. You can refer here for info on Google Apps Script: http://www.google.com/support/forum/p/Google+Docs/thread?tid=182a8d20077a57e1&hl=en |
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