and some buttons to interact. >> reporter: as trained engineers, esteves and chevalier admit they can use sedilot's help on the business end. >> i'm just trying to help them to identify the right contacts or the right things to do to be ready. to have a good market study, what is the pricing structure they should have so they have a chance to sell? >> reporter: but before they can sell, they have to refine their prototype. the pair has been working closely with the city of nancy to pursue additional funding, and find a way to get existing data about transportation schedules, accessibility and other services into a computer program that works with the cane. esteves and chevalier are also collaborating with eventual users of their product. >> they tell us all the problem they can encounter in everyday life, so that's really help us to build our functionality around their problem. like the problem of portability. since the box fits on an existing white cane, it folds and unfolds just as easily. >> you can collapse it to put in your bag. >> is that something that blind people told you was