Ah, given the context my mind went right to ammunition microstamping. Encryption software and 3d printed guns are simply implementations of ideas, both physica

Ah, given the context my mind went right to ammunition microstamping. Encryption software and 3d printed guns are simply implementations of ideas, both physically interact with the world and both can be observed. ABS plastic stock is to blank hard drive as printed gun is to c:/pgp.exe.