Is it reliable to use the IP address to identify a user on your website?

Question

Here is my situation. I am part of a project creating a P2P charity website, where users connect and can give money to one another. Because of the nature of the site, we kno

Answer 1

Totally unreliable...

1. Somebody on dial-up will have a different IP address every time they "dial-up".

2. DSL users will have a different IP address every time they reset or reconnect their account unless they pay for a static IP.

3. Many users on a particular LAN will be sharing one public IP address.

4. A particular user can login from home, work, public hotspot and have a different IP from each location.