There is a glimmer of hope. A group called on GitLab is currently reverse-engineering the keyboard firmware. In Q2 2024, they released a Magisk module that restores some capacitive functionality on Android 13 GSI—specifically horizontal swiping.
Risks and mitigations
But that is years away. For now, the KEY2 remains a time capsule. A beautiful, typing-savvy time capsule. blackberry key2 custom rom
In TWRP:
Warning: This guide is for educational purposes. Flashing a custom ROM will trip SafetyNet/Play Integrity, breaking banking apps and Netflix HD. You assume all risk. There is a glimmer of hope