Musikmesse Update: Tronical has announced that its Powertune system is now in production.
The system automatically tunes guitars. While this may seem fairly trivial to keyboardists, creating a system that automatically keeps an electroacoustic mechanical instrument in tune isn’t trivial.
They system also expands the range of possibilities for guitarists, letting them automatically switch tunings.
Here’s Tronical’s video introducing Powertune: