Facebook will ask its more than 900 million users to provide it with their mobile phone numbers, Daily mail reported on Friday.
The move is a part of drive to improve security on Facebook, and comes in the wake of password hacks at other networking sites including Linkedln and eHarmony.
Millions of Facebook users have already seen a link at the top of their desktop news feed requesting them to follow "simple security tips". They are then requested to provide their phone number for secure account recovery. The social network would then send a text message to the user informing that their password has been changed.