face recognition in macbook for unlock

face recognition in ios devices require a special camera which only the newer iphones has so the older ones does not support it

same with windows's version called windows hallo only few webcams support it

about pin and other features you can let apple know you are missing them using their feedback channel

Product Feedback - Apple

The Mac does not support face recognition.

Just to add, there's no telling what Apple plans for the future, near or otherwise.

If you mean such as Windows 10 has, no. You can always use a shorter password. Of course the shorter it is, the easier to guess.