Creating a public poll.how do you validate that the user only vote once.I tried using an IP address but some organizations use 1 IP address.
validating a poll for user to vote once
620 Views Asked by Nsovo Manganyi At
1
There are 1 best solutions below
Related Questions in SURVEY
- call Win32 API in flex to set Window Display Affinity
- Adding a listener to a VerticalScrollBar in flex
- Two ane file conflict in one flex mobile application
- Using AS3 Timer & distriqt Notification ANE To Send Notifications While In Sleep Mode
- Creating a vertically draggable container in Adobe Flex 3.5
- There is no save() method in FileReference Class of Flex
- Passing data between MXML files and opening one after Click on another
- How to check a Number in mxml?
- Strange flex module behavior.Module become null when add a little nonsense code
- AS3 can't find the load method on a Loader
Related Questions in VOTE
- call Win32 API in flex to set Window Display Affinity
- Adding a listener to a VerticalScrollBar in flex
- Two ane file conflict in one flex mobile application
- Using AS3 Timer & distriqt Notification ANE To Send Notifications While In Sleep Mode
- Creating a vertically draggable container in Adobe Flex 3.5
- There is no save() method in FileReference Class of Flex
- Passing data between MXML files and opening one after Click on another
- How to check a Number in mxml?
- Strange flex module behavior.Module become null when add a little nonsense code
- AS3 can't find the load method on a Loader
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
Popular # Hahtags
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
It's no 100% solution, but you can use a browser fingerprint in combination with the IP adress. See this site for some usable and easily gettable browser properties.
Disadvantages: Some people may be left out (especially in large organizations with a very restrictive and thus homogeneous infrastructure), others may vote twice, for example by using different browsers.
If you want a 95% solution you have to require people to sign up with their email adress and proving that they received the email by klicking an embedded link, but depending on how much interest they take in voting, it may scare off a lot of potential voters.
A 100% solution for this problem does not exist, as far as I'm aware of.
Edit: Cookies are another obvious choice if you don't care too much about people gaming the poll system (just writing an auto-voter that ignores the cookies you send it).