Android Keystore Plugin for the EOSIO SDK for Java
Block.one is committed to supporting a wider range of security solutions for applications built on EOSIO.
The Android Keystore plugin allows developers to store cryptographic keys in a secure container on the device making them more difficult to extract. Once keys are in the Keystore, they can be used to sign transactions without exposing them to external applications. The intention is that no-one can see the private key except the secured hardware, not even the user, once the keys are stored inside an Android device that supports the hardware-backed key store.
Read more about Android Keystore: https://eos.io/news/eosio-alpha-release-android-keystore-plugin/