To the rescue comes AcrossAir, a British mobile application development company. They have created a simple, yet useful, iPhone application, that shows you where's the nearest tube station. When held horizontally, the application behaves quite like a map, but when the phone is tilted upwards, bubbles signifying stations' presence are overlayed on the video feed. Obviously, this only works on the new iPhone 3GS, since it requires a compass reading.
Here's some obvious further directions from the top of my head, this kind of app could follow:
- Add more cities around the world, New York should probably be the first.
- Add more public transportation options, such as buses and regular overground trains.
- Add route planning, so the application will also recommend which station best suits your needs.
- Some real time info will be great, like knowing when the next train is due.
- Make it work underground (using cellular tower triangulation in lieu of GPS read), so commuters can be advised where to get off a train, and which line should they take next.