Long story short is that both myself and my roommate have MacBook Pro's. His charger broke around 2 weeks ago and he has slowly but surely made his way over to leeching off of my computer charger. Hes been known to be careless with his electronics and I'm not in a postion to replace mine if he breaks it. I've told him time and time again not to use it, but whenever I go out, i'll find that its plugged into his computer. I'm wondering if there is any app out there that would "Lock" my charger so that it only works on my macbook pro. Any help would be great. Thanks.