well alarms and lojack work sometimes but if the thief knows were the box is(lojack is mounted in the same spot on most bikes that are similiar - ex. all cbr600rr and 1000rr box mounted in sa,e spot same with yama and suzukis and kawas) so if the croock knows were one is he know were the other is bottom line if they want it bad enough there gonna get best bet is to mark everything i know emc has a process were they mark you swingarm plastics motor and wheels forks and just about everything else granted it will not keep your shit from being stolen but if it is and you have a suspect or some one is selling parts that look like yours you can check them and find out and most marks are un noticable to the naked eye and cant be seen or found unless you know were to exactluy look and i have heard that some insurance companys give a discount for having this done it may be worth it to check into it for some of you..