As an alternative to this, what about ICBM/Nuclear Launch codes - they have the potential to destroy a lot of value (both natural, material and psychological)?
Or even a terrorist's planning information prior to an event?
Or even genetic code?
Or even a terrorist's planning information prior to an event?
Or even genetic code?
[1] http://www.damninteresting.com/ive-got-the-same-combination-...
The difference is the private key gives the beholder power over the wallet at any time from anywhere in the world. No additional information is required.