week 6

this is actually how I processed it: I used a foam-core-made cellphone to mimick the using situation.
And change slits when testers have made a "sure" or "back" or whatever steps in my mock-up model. and observe their choices, and ask them why to make this choice instead of the others.
so this is how it look :
so far, what I've been improving is, surprisingly, people ask me why to invent this, they say"oh, just ride for 5 more minutes and get to another store!"