Question

Distinguish user with same IP

Not sure if this is the right forum category for this question. Can a website that doesn't require registration by users distinguish between users visiting from the same IP address? If yes, how?

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Answer
(NT) by the use of cookies
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Distinguish user with same IP

Thanks for the reply,
What cookie info can distinguish users from each other on the same device if their not logged into a browser for example? What differentiates cookies from each other if multiple users have one?

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Cookies

It's up to you as programmer to give every unique browser used on every OS account the user is logged in to on every device he uses a unique cookie (and another unique cookie if he deletes it or each time he goes into incognito mode).

If you encounter such a cookie all you know is somebody went to your site with that browser in that OS account on that device in non-incognito mode earlier. But you don't know if it's the same person. It can be anyone that uses that OS account on that device. And it can be the same person that has a different cookie on another device on that same IP-address.


What do you mean with "logging into a browser". I login into Windows or into a site, but never into a browser.

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Distinguish user with same IP

I understand that a user would have a different cookie on different devices. I just wasn't sure if a website could separate/distinguish between users using the same device, based on non-personal info, since the device info would be the same for each user. That's what I wanted clarification on.

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Device info you say?

It's technical but you can query the screen capability of the web browser. This is for a web master to implement so I'll not go further. You already have their IP so you have to look at all the other things you can get from a common web browser.

http://www.hexacta.com/2016/06/15/browser-fingerprinting/ should get you a start or startle.

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WebInfo

If its technically possible that's good enough for me, let the SME's figure it out.

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SME!

Subject Matter Expert.

Just so all understand. Also the key word here or words is browser fingerprinting. It's a testy area for those that want to browse without being identifiable.

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