> Do you think some option is okay?

Yes, definitely. The distinction between a supervisor watching their employee vs. cameras + CV vs. using wearables to automate the watching seems completely arbitrary to me. Are you OK with a cab company monitoring its cars via GPS? Or a trucking company monitoring its loads via tracker? I am, and again, I find the distinction arbitrary. With one caveat–the employee is informed prior to employment that these tools will be used and they are a requirement of employment.