Tracking GPS chip with SIM card to put inside Macbook Pro

Anyone knows what's the smallest GPS tracker in the world that could fit inside a Macbook Pro? I guess this GPS tracker would have to use a nano SIM card and I there should be a way to hook MB battery to power the tracker.

I live in one of world's 10th most dangerous cities in the world and MacBooks here are about 4x more expensive than in US, so investing some money on a good tracker for it is worth it.