I like that it's simple to connect my Garmin GPS device with time2track, which is handy because there are so many great apps out there! It works really well in real life situations or while working outside of your office.
Sometimes when you have multiple monitors open, I'm not sure if it will sync properly - but as long as you're looking at one monitor, it should be fine! We use it for our team meetings for training purposes, and it allows us to easily see where everyone was during various timeslots. The software makes it easy for me to create custom reports for each team member.