I'm at work. The plumber shows up at my house at 10 a.m. I verify his identity and arrival with my front of house cameras. I talk to him remotely via the door intercom, disable the security alarm, and unlock the front door for him. I monitor his work and actions with my internal cameras and watch him leave. I remotely lock the door behind him and re-arm the security system. All the video is watched in a small window in the corner of one of my monitors, while I still get real work done. All without having to take time off from work.
Doesn't everybody do this kind of thing? Or do you still actually wait for the Comcast guy between the hours 8 and 2?
BTW, the reported vulnerability has already been fixed.