Why microsoft doesn't provide new lock screen input methods?

[WPCentral Question]

Windows phone 8.1 has included a lot of features to the windows phone, but I still don't understand why is microsoft unable to provide a new lockscreen input method. It is just that numeric password we can use. Other O.S. have pattern lock or picture password.
I really hoped that WP 8.1 would have a picture password as the Windows 8.1.

 

[Em Atul]

I also xpect same from wp same.. Is their no app for locking app in windows store?

 

[berty6294]

I really was hoping picture passwords would be released with 8.1. Hopefully it is something they are adding soon.

 

[associatedpress]

There is no app in the store that will allow you to change the input method on the lock screen as there is no API Microsoft had made available for that part of the operating system.
I too however hope picture password will come soon

 

[xandros9]

I hope that will come in time.

 

[lkcbharath]

Considering even iOS doesn't have pattern lock, nothing much to complain about.
But yeah, pattern lock would be appreciated