A moral of the story is: put a sticker on the cover of your laptop. Similarly, a bit of flagging tape[1] on luggage isn't a bad idea. Having an expensive and precious belonging that looks exactly the same as an uncountable number of other people's belongings is, on the face of it, unwise.
I try extremely hard to do this, but last time I flew it was chaos at the x-ray, and my laptop got way ahead of me, and was sitting on the other side for at least a few minutes before I was able to get through and get it.
Sometimes, there is nothing you can do.
Besides, if that happens it's the company's problem, not yours. And they tend to care much more about the data on stolen devices than the hardware itself.