you could easily carry around a USB memory stick with many different formats.
It's a bit didactic, which put me off a little, then I got into it and experienced a great deal of disorientation when having to be back in my real local world, to deal with freecyclers.
So, the book works for me. This was reinforced by having walked a lot in the areas where the book is set; in fact, I have a ticket for a performance this evening at 24th and Mission. And am still enamored of "Wierd Fish" at 18th and Mission. And I have my Fastrak transponder and contactless (arfid) BART card. (I note that Translink still doesn't work, though :-).
I just hope the book does well with the target audience. I've donated one to a high school library, with hope.
