Password unlock and access to widgets?
Lock screen is probably the most discussed topic since release of jellybeans.


Well currently there is only one solution to yours problem if device is not rooted. install another lock screen which will provide you that slider shortcuts and which will then be followed by stock lock screen with pin/password. one software is widget locker available in market. however this will be a waste of memory using dual lock screens.

 Alternatively I'm looking for a solution for a rooted device. I will post once found. 


Most custom roms comes with this feature as stock like AOKP and MIUI.