Stealth Mode
Would like a method of installation that is completely invisible, non-stoppable by the end user of the computer. For them to review their timeline, etc., they could use the browser interface at the server via HTTPS. Preferably, the entire desktop piece would run in an unstoppable Windows Service.

As described raises several privacy issues, a milder version of this was implemented (without an unstoppable service), you can find it in settings under Privacy and notifications.
-
rdsignr commented
I agree 100%: if people have to rely on the software tracking the time, it is essential that it not be stopped accidentally.