Why do these companies repeatedly store only *some* of my personal information encrypted?
Because cowboy attitude. We just had here the story on the EU law about deleting older links to personal data from search engines. Where most US contributors insisted that this data is "facts" and it would be "free speech" to disseminate it as businesses see fit. Combine this with EULA practices where businesses (many in monopoly position) will not service you unless you agree that they collect your personal data and share it freely with various "partners". When such practice is questioned they always justify it through "it's good for the economy". Case closed. Unless we take the time to question what exactly "economy" is. But we never do.
Unlock your phone by just picking it up! No more pesky password or gesture PIN, just scan an NFC tag! This guide covers creating an NFC ring, putting an NFC tag in your nail polish, modding your Android installation to read tags from the lockscreen, and creating an automation toolchain to unlock the phone when the desired tag is scanned.
There is also a video that demonstrates how it works.
Somebody ought to cross ball point pens with coat hangers so that the pens will multiply instead of disappear.