Posted by houghi on 07/08/07 16:52

Lars Eighner wrote:
>> Would it not be possible to do this from their IP address?
>
> You could probably beat outright guessing in that way, but there is no
> reliable relationship between IP and geography, no necessary relationship
> between the IP making the request and the user's actual IP at any given
> moment, and again no necessary relationship between the user's actual IP at
> any moment and geography.

Guessing is a bit wrong. I would say guestimating.

> You might get it right most of the time, but you will get it wrong a
> significant part of the time, and in some cases you'll get it wrong in an
> absurd way --- such as claiming the page was last updated some time in the
> future.

Most of the times would be good enough for most of the sites. You can do
a first guestimate and then have a cookie so that people can change it
and have the correct time whenever they come back.

The accuracy would also depend on what you intend to do with it.

houghi
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