Evolution - Programming GPS and OpenStreetMap Applications with Java - page 217

If the customer has a GPS phone, he could use the waiting time to buy
something at the next store. When he comes out of the store the cab is
standing right there to pick him up; if not, the customer can press \call
driver" or check the map for his current position. This ROApp adds only a
small layer to the ROAF packages but a lot of added value. The customer
can be identified and simplify the payment via electronic cash with another
button \pay."
POI Sites
Every navigation system has points of interest (POIs) in its data to enable
passengers to travel to well-known places by name. POIs have a wide range
of categories and have developed a market of their own. While POIs are
only names connected to an address and a location, their owners (restau-
rants, hotels, shops, etc.) have a vital interest to add up-to-date informa-
tion as needed.
In the ROAF, a POI can be represented by an independent RO (ma-
chine). The POI becomes much more than a point on a map. With CAD
standards, any building Shape can be modeled by extending the RealObject .
In the Autobahn scenario, gas stations could be built along the road and
provide information about waiting times, amount, and price of gas. The
RealCar s would need to take an exit (change lanes) and drive to the pump.
Generally, POIs could be maintained similar to websites. Providing in-
dependent POI machines introduces a paradigm change in the world of
navigation and location-based services (LBS). A hotel runs its own com-
puter to add 3D information, such as the location of vacant rooms and
current prices. A RO visitor could automatically process this information
and compare hotels along the road, book the room, and retrieve naviga-
tional instructions to the parking lot.
The RO would become a little ROApp.
Real Estate
With the development of navigation systems, the demand for map data
has grown massively. Cars with a large number of sensors and 360 degree
photographic- or even laser-capturing capabilities, drive around cities to
digitize the world.
Accordingly, existing markets have to adapt to this new technology. In
the real-estate business, data is collected for every building: photographs,
ground plans, etc. This data could be digitized and loaded into RealHous es
to be available in the ROAF: \the live Web." These houses could be visited
or simply enrich the environment, while other houses might only exist as a
building footprint with height information.