Can You Write in a Coffee Shop?

There are several manufacturers now making devices out there that are portable, battery powered computers that do nothing but write text documents. Have you seen any of these? I've seen them. And honestly, this just really isn't a problem for me. You know, i i can take an eypat and write invit sat of min coffee shop and just write, assuming i can go to shop again. But if you need to use a totally separate device in order to do that, then i could see at the roll that this would have in your life.