baboon boy, maybe the drugs are making you a little paranoid, a logbook can still be stolen, in a bag from a car, lost, people may have no purpose stealing a logbook but if they steal a flight bag for the headset, flight computer, gps theres a good chance the logbook will be in there.
you must live in a rough area, i've never been mugged or even had a mugging attempt but I suppose i'm a bit on the large side for that also I still keep a paper logbook so my system only differs from yours by use of the phone.
As for Logbook Pro you already must know what it can do as you claim to have made something exactly the same, although I can't see the CEO of Logbook Pro calling an emergency shareholders meeting anytime soon.