Hi Everyone, I need to implement a survey on my site that serves as an rsvp to an event (open invitation). The requirements are: ~ Allow user to indicate attendance at the national event, their local event, or both ~ Only allow one vote per visitor ~ Determine visitor's state I can create the survey, but what's the best way to prevent multiple submissions from the same user? I could do it by IP, but what about users going through a proxy? I could do it via setting a cookie, but then the issue comes up when they clear their temp files. I could do it based on email, but that adds a field that the user needs to enter, and some might not want to enter that info, and some could vote multiple times using different email addresses. I would prefer just a simple, "Are you going? Click here" interface. I also need to determine what state the person is in. I could have them provide the info viaa dropdown, but is there a more elegant way? Thanks!
I think using cookies is the safest way to go. You could also do by IP, but limit the voting to maybe 1 vote per IP per 15 minutes? Aristotle DiscountASP.NET www.DiscountASP.NET
Thanks, Aristotle. The only problem I have with IP is that if a user is in a corporate setting, they are likely going through a proxy server, so all employees would have the same IP facing the internet -- which would only allow one person from that corp to vote in my survey. With cookies, users could not accept them or delete them. I don't suppose there's any way to capture the machine name in a non-intranet setting, is there? Also, any way to determine their state without having them enter it? Thanks!
