The national security laws prevent chips from working if you're above a certain height and over a certain speed. Although most chips implement an "or" instead o

The national security laws prevent chips from working if you're above a certain height and over a certain speed. Although most chips implement an "or" instead of an "and". As for military receivers, apparently they are unclassified but plug into a separate system that works like a TPM and provides the decryption keys, which have to be refreshed at least once a year.