I see that the patent for Crosspass lists a figure at the end which can conceivably be used to generate detatched bitcoin addresses. But it reminds me of the Silent Payments idea. But in any case, I think the main use for this is to be sharing passwords in an easy way.

Although doing that using the internet is kind of an exclamation mark because of all the snooping middlemen. I would think it would be much safer for two devices to share it over a private LAN.

<Also it doesn't improve the security at the end of the day, if the password being authenticated is insecure in the first place, like "qwerty" or "123456".>