It is rather trivial to turn off cookies. It's not a matter of clearing cookies, the user simply turns it off. Heck, many users browse with cookies turned off by default.
-R On Sun, 30 Jun 2002, Bruce Karstedt wrote: > Why not create a cookie for that poll. When the vote check for the cookie. > Unless a user clears the cookie himself, you basically limit votes to one > per computer or one per computer per user. > > Bruce Karstedt > President > Technology Consulting Associates, Ltd. > Tel: 847-735-9488 > Fax: 847-735-9474 > > > -----Original Message----- > From: Rasmus Lerdorf [mailto:[EMAIL PROTECTED]] > Sent: Saturday, June 29, 2002 10:34 PM > To: JJ Harrison > Cc: [EMAIL PROTECTED] > Subject: Re: [PHP] Getting IP from behind proxies > Importance: Low > > > You need to assign each person a unique identifier of some sort. ie. > assign them a login and password and verify that information by sending a > message to their email address. Then only people with multiple email > addresses can spam your system with votes. > > Beyond that it comes down to verifying each voter manually. Get a phone > number and call each one up. Even that is not quite foolproof. > > Personal certificates might be an option here, but that is rather > cumbersome for everyone involved. > > Basically there is no good solution for this problem. Until everyone in > the world has a unique and non-spoofable, easily verifiable id number, > what you are trying to do is impossible. > > Basically live with the fact that your voting system will be inaccurate > and spoofable. > > -Rasmus > > On Sun, 30 Jun 2002, JJ Harrison wrote: > > > what esle could i use? > > "Rasmus Lerdorf" <[EMAIL PROTECTED]> wrote in message > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > You can only get it if the proxy provides you with this data. Most > don't, > > > so this is not a reliable approach. > > > > > > -Rasmus > > > > > > On Sat, 29 Jun 2002, JJ Harrison wrote: > > > > > > > I want to check to see if people have voted yet for a poll. > > > > > > > > How can I get the ip of a user from both behind a proxy and the > proxies > > ip? > > > > > > > > is this simple? > > > > > > > > will i have trouble with firewalls etc? > > > > > > > > > > > > -- > > > > JJ Harrison > > > > [EMAIL PROTECTED] > > > > www.tececo.com > > > > > > > > > > > > > > > > -- > > > > PHP General Mailing List (http://www.php.net/) > > > > To unsubscribe, visit: http://www.php.net/unsub.php > > > > > > > > > > > > > > > -- > > PHP General Mailing List (http://www.php.net/) > > To unsubscribe, visit: http://www.php.net/unsub.php > > > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
