Pixel devices (at least previous ones) supported the inverse of this, where you could set the phone to remain unlocked until it was left stationary on a table.

Pixel devices (at least previous ones) supported the inverse of this, where you could set the phone to remain unlocked until it was left stationary on a table. The theory is that (for some people) the most common reason to lose a phone is leaving it behind laying on a table, and it can safely stay unlocked as long as it's in your pocket.