For my project, I will use sequence navigation. It is the best technique because the feature itself is not very complex. The "Elevator Attendant" feature will be accessible from the main menu of the user's mobile phone. When the feature is selected, the next page will provide another menu, including options to "Call Elevator," "Customize Settings," "Cancel," as well as a "Help Button." The user can select his or her preferred option and a new screen will appear. This is a very linear process and if the user needs to return to the previous menu at any point, they can do so by choosing the "Back" button located in the upper right corner.

I don't anticipate too many navigational problems arising since it is a simple structure and design, but things might get confusing if the user tries to do multiple things at once. For example, if the user has called the elevator, then checked out the "Help" option and then wishes to cancel the elevator call, there might be lots of back and forth between the main menu and sub-menus. It doesn't seem like much of a problem, though, and the sequence navigation can still be applied.

Because the specific application of technology in something like a "Smart House" is so foreign to most users, there are lots of potential problems that could arise. It would be lengthy to have lots of FAQ's, step-by-step demonstrations or overviews for the various ubiquitous computing devices in a "Smart House." The amount of time and money required to establish this sort of help would be extensive. Manuals for each device would be a nuissance for the users and would also take up lots of space in their home. It seems that the technology behind a "Smart House" should be such that it is user-friendly and doesn't require much help.

Some possible suggestions for this challenge include: (a) providing one manual for all the devices available in a "Smart House." With an index as a navigational tool, users could easily find what they need within the master manual and solve their difficulties accordingly, or (b) having online access to help menus so that paper manuals don't create clutter in the home, or (c) to create a voice-operated interface within the home that would directly connect the user to a customer serivce/tech support for the manufacturer. Rather than having to deal with menus on the telephone, the user would speak to a representative immediately and all of their information (i.e. the problems they encountered) would be recorded in the company's system so that if they call again, the agent will know what their previous problems have been. This information will also be valuable to the manufacturer because they could refine some of the problems that were not anticipated prior to the product launch.