Single login at a time by one userid

[chayanvinayak]

Single Login by one userid at a time

Can any one please suggest me the php script For Single login at a time by one userid i.e. Using one userid no one can login in more than two machines or twice at a time.

       -------------- [B]it's a challenging task [/B] ....

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[laserlight]

Re-assign some random access key on each page load.

[chayanvinayak]

hi laserlight

i could not understand , can you give me the code.
- i have a constraint , the script should be like this that user will not get permanently blocked if he gets disconnected abnormally.

waiting for your reply.

Chayan