NYCPHP Meetup

[Paul Houle]

Brian Dailey wrote:
> (By the way, I know an IP address *won't* work, it was a theoretical 
> question.)
>
> I've had this same problem before and I'm curious to see how others 
> have solved it.
>
Reinventing the wheel is a waste of time in most circumstances.  When it 
comes to security,  reinventing the wheel is a way to get hacked.

Take a look at some serious systems such as:

http://developer.yahoo.com/auth/
http://www.sixapart.com/typekey/
http://www.projectliberty.org/