[klon]

How about a distress code password that you can give them which when used triggers a self-destruct mechanism.

[edent]

Distress codes are an interesting idea. Although I'm sure that there are probably laws around supplying false information and/or destruction of evidence.

[GotAnyMegadeth]

Dangerous, but what if your destruction code was 1 character out of 20 different to your actual password, do you reckon you could claim the intruder had fat fingers?

[driverdan]

LE will generally create mirrored copies of your data before trying to access it and they'll decrypt it on another system that eliminates the risk of self destruction.

[dwiel]

Better would be a code which reveals a convincing fake account/data.

[aninhumer]

Why not both? When the emergency password is used, it could produce the decoy data, and silently erase the real data at the same time.

[hrvbr]

This would have the same effect as refusing to give them the password: you end up in jail.