Authenticate computer

[scialom]

Hello,

I try to write a script to associate a user to a computer. So it can login only from one computer. In order to do it I need to identify the computer they are using.

I did some research and I see that I can't access the computer's mac number (for security reasons)

Is there another way to get a unique info from a single computer using php? cookies won't help because user can delete them.

I now that I can create a local exe file that will do the job, but I am looking for more elegant solution so the users won't have to download a software.

Any ideas?

thanks!

[bradgrafelman]

scialom wrote:

Is there another way to get a unique info from a single computer using php?

No.

[dagon]

what unique problem are you trying to solve with this approach?

[Ashley_Sheridan]

i've seen this question asked a few times, usually to solve a problem with filling out tests on the same site that hosts the learning material.

Basically, what you want to do can't be done, however, there are ways to achieve similar results.

You use Javascript to pull various data from the browser and store it in a string, but this won't guarantee it to be unique (think an office or school all on the same external facing IP)

You can force everyone to log in, and track their movement throughout the site, and prevent access to certain areas if a test has been initiated.

What is the problem you are trying to solve though?