My personal machine has a python script in the bacground and in addition to a host of other things (un-tarring downloaded files etc) it tries to take a photo of my face once an hour. I use some CV to detect the face & take 10 frames of video, throwing them out if there is noticeable jitter. The closest 6 face fragment frames then get merged together and saved with a timestamp, for my future use doing dumb projects (face authentication, I've created fun timelapses by sorting ~6 months of photos by similarity).

If I were doing this to someone else without their knowledge it would be dystopian, if I'm doing it to myself or with a group of friends also interested in it then it becomes no wierder than taking your temperature every hour for dumb project reasons (biological clock fourier nonsense? whee~!)