Unique identifier
Posted: Thu May 28, 2009 5:54 pm
I am trying to construct a poll where a person can vote once per computer. The result and some sort of unique identifier will be stored in a database. The only one I can think of is an IP address but then if there is a router situation happening, then people in the same house or coffee shop could not vote on the poll after 1 person has done it already. I could do cookies but then all someone has to do is delete their cookies and vote again. What other type of unique identifier could I use for someone on a per-computer basis?