I worked as a VP in a company that tracked everyone in 10-minute intervals. Just having this tracking led to some managers inhumanely squeezing devs and almost all devs ended up burned out after a few years. They went to great lengths to reject any time slots where devs showed insufficient intensity on their keyboard/mouse or if they spotted anything non-work-related on dev desktop screenshots. However, when it came to manipulating metrics to look good (even down to a fraud where they lowered metrics of their devs they didn't like), it was all fine. This culture was enforced by the CEO/COO so there was not much I could do about it outside shielding my people and then leaving when my bosses went even more insane.