Get into your phone faster when it's near to your body

Introduction :

Very cute feature I had found on my phone today ,That I don't need to unlock my phone any more by writing my code or any thing ,All what I have to do now is just keep my phone near to me lol .

Instructions :

1.First of all you have to lock your phone by going to sittings>security>pattern lock or pass lock
2.Now you will see some thing called smart lock available in security tap
3.Click on it and choose on-body defection