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samyk / evercookie

Produces persistent, respawning "super" cookies in a browser, abusing over a dozen techniques. Its goal is to identify users after they've removed standard cookies and other privacy data such as Flash cookies (LSOs), HTML5 storage, SilverLight storage, and others.
https://samy.pl/evercookie/
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Error calling EverCookie #63

Open mohsinali1317 opened 10 years ago

mohsinali1317 commented 10 years ago

Hey,

When I am calling ec.get(identifier, function(value) { ****console.log('response from the ever cookie: '+value); if(typeof value !== 'undefined' && value!=''){...}

the value I am getting is this.

*****Notice: Undefined index: If-None-Match in /var/www2/postify-production/evercookie_etag.php on line 44

Can you explain what this is ?

gdmka commented 10 years ago

It means that the client did not sent if-none-match header to the server.