also customer facing computers
I work at a hospital and we have self-checkin kiosks for patients. Admittedly we'd probably still rely on one app running that the customer interacts with but still I can see cases were a company might want to give basic computer access to people coming in with pre-selected options. Say a library: you can use our book search system, click something else to see if another library has it, and click something else to scan your books out yourself. Could all be one app but with something simple like a metro style start page you could have different apps and a graphical display guiding your customers to click the right thing depending on what they want to do.
