I've written my own shopping cart system which has been integrated into our existing retail system.
Is it wise for me to rely entirely on Cookies for session ID's ?
I know some people turn off cookies, I also know that IPs are even less reliable due to mass proxy usage by AOL style customers.
Any advice on this subject would be appreciated also any statistics on the number of people who can't / won't accept cookies would be useful in helping me make my decision.
I've heard of software which uses the IP when cookies are not accepted but woundl't this just cause more problems is a proxy was used ?