To clarify, throw out as in, device (armed with a key/lock mechanism) becomes unusable (because said key is corrupted lost, lost amid mountain of other keys).

To clarify, throw out as in, device (armed with a key/lock mechanism) becomes unusable (because said key is corrupted lost, lost amid mountain of other keys). I am using password/key here somewhat interchangeably despite common (mis)understanding of what both words imply i.e. phrase versus some random(ish) bits, because the only distinction between the two is the algorithms used to compare (if you want to get pedantic pub/sub and splitting schemes are a bit more different, nevertheless they share the common theme of "secret used to protect something"). So no your YUBI has no password (that I know of) but it is effectively a password (by scanning it and reproducing it at a molecular level you could in fact reproduce it, it's as much a password with protection by obscurity in this sense as writing down a pass phrase backwards is, albeit one is much more difficult to reproduce than another).