Facebook on May 2, 2013 started a new feature called Trusted Contacts Account Recovery. With the help of this feature, users will be able to recover their locked accounts with the help of trusted friends.
It is often for security reasons that Facebook locks accounts to prevent unauthorized access. Sometimes even authentic individuals face problem while logging into their account. In that case they have to answer Security Question or fill out long web forms to prove their authenticity.
SIMILAR STORY : Some Tips to Prevent Facebook Account from Hacking
To use Trusted Contacts Account Recovery feature, one need to set up Trusted Contacts first. This option is available in Security Settings of Facebook. You have to add those people in your Trusted Contact List, whom you trust.
If anyhow your Facebook account gets locked and you want to recover it. Then you will have to provide security codes from 3 of your trusted friends. In that case, call any 3 of your trusted friends who will then provide you with security codes that will help recover your locked Facebook account.