1. Find Nearby Friends You can use this hidden Facebook feature to search for friends who are living near to your house. By using this feature you can find the list of friends with the distance at which they are currently living. The list will be shorted by the name of the place and the time at which they were present at that place. You find the nearby friends on Facebook Go to Options > Nearby friends. You need to wave a hand to start a conversation with your friend. You can use this feature to meet the friend if he/she is present near to the house and don't know that you live in that location. This feature can also be used when you need help from your friends as you can see which friends id neared to you. 2. Logout From All Devices You can use this Facebook feature to logout out from your Facebook account you have left open on your friend's phone. This hidden Facebook feature can save your account from insecure access to your Facebook account. You can logout fro