You could do it...would have to gut a s550 remote and put the parts in it from a cheap alarm key fob. I describe it easier than it actually is.
I had AutoPage alarms in my foxes. The one with the cheesy LCD screen and stealth mode. It had motion and vibration sensors so it would go off like a pager on vibrate and show what area of the car was affected. I could even crack the windows or roll them down by remote. Remote start and all the bells and whistles were on that thing. Was a PITA to wire in. The thing just started randomly going off in the last car I had it in. I pulled it all out. Worthless POS.
There are stealthier things to do. Kill switches still work to keep folks from stealing it. An old guy I know puts motorcycle cable locks on his wheels. Guess folks won't steal his car or the wheels that way.
I just have a tracker in everything I own. I figure I'll help the car community out by finding the thief and dealing with him myself. If you deter a thief they just go on to steal from someone else.