I would love to use something like this to get back on emacs, but it doesn't travel well. I'm on the bus, I'm at a friend's house or my mother-in-law's house or

I would love to use something like this to get back on emacs, but it doesn't travel well. I'm on the bus, I'm at a friend's house or my mother-in-law's house or my brother's house all the time with my computer open. I don't want to be tied down to a specific device or get out a foot pedal on the bus every time I want to program.