Identifying unique visitor using only info that can be gathered through the browser?



  • There is a site that allows a voter to vote for their favorite nominee once a day for a certain amount of days. While entering a vote, the only info given is the ballot choice you choose and nothing else.

    If you are to go back and vote again, there is a message saying "please wait until next day to vote again". However if you just simply use a different internet browser you can enter another ballot.

    I'm wondering what they are using to identify the voter through the browser and if they can tell when a single voter is entering multiple votes through different browsers. Also is there an even more simple/easier way that a voter could be doing this without having to use multiple browsers?



  • Yes after clearing the browser data (history, site data, cookies, cache...etc.) it is possible to enter another vote.



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