No problem. With enough money you could set up a dead man switch to erase your laptop if you step more than 3 feet away from it which is bound to happen if the FBI drags you away. Or set up a voice recognition system that would listen for the words "Open up! Police!".
My point is that with all these amateur lawyer "I can outsmart them on a technicality" schemes I think it needs to be said that you probably don't want to do any of that. Instead, if you do have something that you feel you don't want to expose, use whole disk encryption with hidden volumes, duress codes, etc. but keep your options open. The worst possible scenario to be in is where the only way to prove that you are innocent (or to enter into a plea bargain) is to decrypt your drive but some crazy scheme of yours now prevents you from ever recovering your passphrase.
You can also just, you know, refuse to decrypt the drive. If they're going to torture you, you're pretty much screwed anyway so you probably don't care about the data (unless perhaps it contains crucial private information about friends and family, or business dealings).
My point is that with all these amateur lawyer "I can outsmart them on a technicality" schemes I think it needs to be said that you probably don't want to do any of that. Instead, if you do have something that you feel you don't want to expose, use whole disk encryption with hidden volumes, duress codes, etc. but keep your options open. The worst possible scenario to be in is where the only way to prove that you are innocent (or to enter into a plea bargain) is to decrypt your drive but some crazy scheme of yours now prevents you from ever recovering your passphrase.
EDIT: Can someone please explain the downvotes?