Good question. The short answer is no. The longer answer is that there’s no such device on the horizon, because reliable security enclaves are expensive—and even if cost weren’t an issue, the resulting device would be too cumbersome to maintain and use. For now, the secureLock mechanism is sufficient. However, in the near future I’d like to add an on-device screen for verifying messages before signing, using something like this module:

https://www.waveshare.com/wiki/RP2040-Touch-LCD-1.69.