I wonder about printing a physical bitcoin at Shapeways, with the private key contained inside it.
The key could be a PGP armored printout, or whatever the equivalent is in bitcoinland.
Whoever handled it could not use the numbers.
This is probably unworkable. I have had too much coffee.
Uh, printing the key inside so that you'll have to physically break it to see the code?
![Huh](https://bitcointalk.org/Smileys/default/huh.gif)