3 ms·It's RF so all you would need is a little know how and a spectrum analyzer...by aosmith 13y agoIt's RF so all you would need is a little know how and a spectrum analyzer...gizmo686 13y agoThey could use an interactive zero knowledge proof, or some such crypto.jrockway 13y agoThey could, but most people only test that something works, not that it doesn't work ("goto fail"), and so probably didn't do that. "UNLOCK" "OK"