On 14 May 2010 09:29, Lester Caine <les...@lsces.co.uk> wrote:
> Jagdeep Singh wrote:
>> Hi All!
>> I am looking for a solution, I want a user to do a single Login only on a
>> PC
>> .
>> E.g. If a User has logged on my website website.com in Internet explorer,
>> then he cant login on same website in another browser like Firefox etc
>> with
>> same loginid or another.
>> Can I trace MAC address of a single machine to solve this issue?
> The browser IP address works for us quite reliably. Once logged in, you get
> a message saying already logged on ... and where ... but it does need a
> little help if the user closes the browser without logging out. One needs a
> facility to 'bounce' a user now and again .... however some remote users may
> well have 'floating' IP addresses :(

Don't rely on IP addresses staying the same for a user, it's not safe
in any way and not needed anyway. Karls method is probably the best
bet - just remember to record "last accessed time" so anyone not
accessing for more than 15-20 minutes will succeed if trying to log in


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