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Since the efficiency of iPhone applications is very good, the user can correct an issue fairly quickly by hitting the back button to move up the screen hierarchy. Software architecture on the iPhone make this ability very easy to implement and allows the user for efficient error correction. The user cannot modify information displayed about the objects, separating the backend model from the user model. To the user, the application merely allows a way to quickly look up products for a simple way of comparing specifics. Errors may occur in the backend, such as the object being recognized is not the object being pictured. This design of the application does not account for this possibility. Modifications should be made for the case when a new object is specified that is not in the database or when the picture taken is not of high enough quality to work for the object detector.
Design B
This time, Sally can collect information about all the products she’s interested in more quickly by taking pictures that each have multiple bicycles in them:
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