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How does this work?

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Old 28 October 2007, 07:46 PM
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MattW
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Default How does this work?

Is it IP based?

Old 28 October 2007, 09:45 PM
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judgejules
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It doesnt work well as it thinks I'm about 200 miles away from where I am. Yeah its IP based and the jpg is built on the fly after checking your browser information that is sent when retrieving the image. Easy pie.
Old 28 October 2007, 09:51 PM
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MattW
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Originally Posted by judgejules
It doesnt work well as it thinks I'm about 200 miles away from where I am. Yeah its IP based and the jpg is built on the fly after checking your browser information that is sent when retrieving the image. Easy pie.
hmmm. maybe it's hardcoded then and we are seeing the same thing.
Old 28 October 2007, 11:25 PM
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Originally Posted by MattW
hmmm. maybe it's hardcoded then and we are seeing the same thing.
Its quite close for me.. just does a lookup on your IP and copys the text into an already created JPG with a text box. Simple HTML really.
Old 29 October 2007, 01:58 AM
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judgejules
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Originally Posted by pimmo2000
Its quite close for me.. just does a lookup on your IP and copys the text into an already created JPG with a text box. Simple HTML really.
Eh? Its a jpeg, no html involved.

Follow this and see: http://www.danasoft.com/citysign.jpg
Old 29 October 2007, 02:03 AM
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Originally Posted by judgejules
Eh? Its a jpeg, no html involved.

Follow this and see: http://www.danasoft.com/citysign.jpg
thats a link to the final picture !

The picture has to be created and something does a lookup on the IP!

Unless he made a load of jpgs that contain every local ISP local across the world ?

The IP belongs to a sever and using DNS lookup the code in that link can remove the rubbish and in most cases provide a close match.
Old 29 October 2007, 02:10 AM
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RichB
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you can draw onto images on the fly, quite simple really.
Those images with letters in do the same...
It knows where your ISP is...
Old 29 October 2007, 02:44 AM
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Originally Posted by RichB
you can draw onto images on the fly, quite simple really.
Those images with letters in do the same...
It knows where your ISP is...


There must be some code doing the lookup though ?? woudnt it be HTML??
Old 29 October 2007, 12:03 PM
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judgejules
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Originally Posted by pimmo2000
There must be some code doing the lookup though ?? woudnt it be HTML??
Nope. It would be server side script; asp,php etc rendering the jpeg on the fly. No html involved.
Old 30 October 2007, 11:02 AM
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Originally Posted by judgejules
It doesnt work well as it thinks
You're right there.

It says for me "You live near Derby"

And i'm from Northern Ireland!

Shaun
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