This is your resource to discuss support topics with your peers, and learn from each other.
Is face recognition in blackberry can be done..
I am not aware of any API to do this in BB7 or earlier devices.
Not sure about BB10 - you should ask on one of the BB10 specific forums if that is of interest.
IS there is any third party libary in BB OS 7 or earlier...
I don't remember anyone asking for this on this forum before. I suggest you do a wide search. If you look for Java ME libraries that do this, you should be able to get the code working on a BlackBerry.