1. I avoid leaving it around in public places. 2. If I were to think about leaving it in a public place, I'd think of ways to make people not want to steal it

1. I avoid leaving it around in public places. 2. If I were to think about leaving it in a public place, I'd think of ways to make people not want to steal it - it's a laptop, it takes about 2 seconds for someone to grab it and run if it's not secured. No alarm or tracking system is going to do anything to PREVENT theft if the thief doesn't know about it.