Restore ease of locking/unlocking while walking

Description

With the new interface, I noticed a possible improvement to do with the following use case. Locking/unlocking a video while moving with my phone requires more attention and attempts (when walking, and especially running).

Usability aspects:

• Locking is now a 2 steps process: click on the "..." to open the advanced menu, then click lock. Due to the size of the icons, the steps can be tricky to complete while moving.
• Unlocking is now based on a slider. It can be difficult to locate the slider due to its height, and also to slide it with one hand only (due to it's position in the bottom, and slide amplitude required)

Request

Think of ways to improve usability.

Expected behavior

• One click locking
• Easier unlocking: increase height of the "slide to unlock" bar. Think of ways to allow unlock with one hand on the go.

Screenshot / video

App mode

Smartphone