Re: Identifying a user who previously created a profile

* Jacques <admin@hrfocus.co.za>: > How can I ensure that a user is prevented from creating a second profile > after he has registered a second time with different registration details? > > I thought of capturing his IP Address and checking this value against my > users table in my database where I have captured IP Addresses of users who > have previously registered. IP address is very unreliable -- most large ISPs and corporations use proxy servers, so all users appear to come from a single IP address (or a small group of IP addresses). You could possible consider setting a cookie on the user -- but that's not even a foolproof method as the cookie could be manually deleted by them or they could use a different computer to create a profile. Basically, this is an unsolvable problem unless you can control the network (i.e., it's only running on a LAN and you KNOW the IP address won't change for their machine). -- Matthew Weier O'Phinney | WEBSITES: Webmaster and IT Specialist | http://www.garden.org National Gardening Association | http://www.kidsgardening.com 802-863-5251 x156 | http://nationalgardenmonth.org mailto:matthew@garden.org | http://vermontbotanical.org