"I’m not a burglar, but I worked for the largest security company in this country for half a decade.
Burglar alarms do not deter burglars. They just alert you that you have been burglarized. Most of the time the police will take very little action in response due to the fact that 98% of burglar alarm activation constitutes false alarms.
The sign that comes with the alarm though? That thing is worth more than the alarm as far as deterring burglars."
I worked in security for 20 years and responded to more alarms than I can recall. People do steal electronics and lots of them. Encryption and passwords are easy to bypass with the right knowledge. Most crims aren't stupid. They're not the local crackhead or kid