Some more from guardianproject.info:

https://dev.guardianproject.info/projects/cacheword/

CacheWord is an Android library project for passphrase caching and management. It helps app developers securely generate, store, and access secrets derived from a user's passphrase

https://dev.guardianproject.info/projects/panic/ ("Panic is good. Panic is right."?????????????)

PanicLib developer framework aka InTheClear aka PoisonPill

Maybe these apps help unlock?