GPS trackers - Big Brother on Steroids
Anyone carrying a cell phone can be tracked. The only limit is the creativity of those with your phone number.
I find that too is the most easy to use. It’s the GPS tracking system that I always turn to when I need something that is easy. I also suggest it to all my friends.
I have google maps setup to track me. If I get behind on my records, I can look at the timeline and see which job I was on and the day and time. This is not for billing, I work for a construction company. This is just for the time sheet at the end of the week.
I also have it setup so my wife can find me if I don't come home.