Use Macbook Touch ID button to sleep/lock

I'm not sure if this has been asked before:

I want to use the Touch ID button to sleep or to lock my 2017 Macbook Pro 13". I know there are other shortcuts for doing that, but I want to be able to use the power button as such... (I also want to explicitly use the power button, I know I can add buttons to the Touch Bar).

By now, apart from using it as Touch ID, I can only use it to do a hard-turning off by pressing during 6 seconds or to access accessibility options by pressing 3 times fast. I want to lock my mac by simply pressing the Touch ID button.

I can't believe that something like that is not possible, or at least configurable... If it isn't, is there a way to use it as another regular key in order to make a shortcut? (if I try to create a shortcut, pressing the Touch ID button does nothing)

I've seen that some years ago, pressing the power button during 3 seconds pops up a menu for choosing what to do, but that also doesn't work in my case. In this Apple's tutorial (recently updated) they also mention the possibility of doing that by pressing the power button, but again, it doesn't work for me.

Thanks!

Solution 1:

You can use Touch ID button to lock your Mac after upgrading to Big Sur.

Solution 2:

This is not possible.

From this Apple Support page:

Pressing Touch ID won't put your Mac to sleep. Instead, choose Apple menu > Sleep. You can also add a Sleep button to the Control Strip in the Touch Bar: Select View > Customize Touch Bar.

WARNING: this answer is not relevant since BigSur release.