Hi it is XMPP / Jabber protocol. I have developed a similar solution in Perl though which i have released on open source licence. Pl. let me know if you need the code. -- Regards, Abhishek jain ________________________________ From: kranthi <kranthi117@xxxxxxxxx> To: php-objects@xxxxxxxxxxxxxxx Sent: Mon, October 26, 2009 5:12:15 PM Subject: Re: yeh it is not possible unless the user is in your contact list... if the user is in your contact list then this can be achieved by the use of Google APIs/XMPPHP. i personally never worked with either of them though [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]