Knock Knock feature

[jd4d]

Is there a way to get this feature from the LG G2 on the s4? I think that is pretty clever.

Galaxy S4

 

[AlphaVictor87]

Pretty sure this feature has to do with the power button being on the back of the phone. Not sure how you would expect to implement it on the S4

 

[robcop19]

this is something im so waiting for. Of course it has to do with the power button being in the back but some developer out there hopefully will find a way to flash this or make an apk. The G2is not the only one with a button less power
Pocketnow.com/2013/06/11/buttonless-unlock-is-overdue