Half out of curiosity and half out of real interest I’d like to know what is the smallest (portable) device with a reasonable quality keyboard that could run an appropriate Linux distro and emacs and people have tested for actual long-term usability.
I’m looking at UMPCs and various 7-inch mini laptops you see on eBay.
Thanks!
Any modern phone + a bluetooth keyboard
Modular, you can pick whichever keyboard you want and choose how you want to trade off size & usability. There are some foldable keyboards that pack down pretty small.