[saganus]

Toss your keys.

But then the LEO agent sees this, and not only does he pick up the keys, he will then proceed to charge you with something for resisting arrest, or obstruction of justice or any of the myriad of ways they have to make your life a living hell.

I think this would be similar to smoking pot in a moving car, then getting a police car to tell you to stop and then you throw the drugs out the window. I believe that's enough of a reason to charge you with all sorts of nasty stuff.

[Pinatubo]

Considering the alternative, I'd toss my keys.

[MichaelGG]

Yeah but when you "throw the drugs out the window" they don't disappear.

[saganus]

That's my point. If you have your laptop locked depending on whether they are close by or not, then throwing the key away will not help you.

I was trying to say that it seems to me as an ineffective method. Just as ineffective as trying to argue with the police that since you don't have the drugs on you (because you just tossed them) you are not in trouble. The drugs don't disappear just as the keys won't, so the agents would just have to get the keys and unlock your laptop.