Another example of the evolution of mobile tech and its interaction with the human body. The Lumo Lift catches you slouching, buzzes to let you know, communicates all this to your iOS device.
Interesting, though not surprising, that this is available for iOS devices at launch, with a promise of Android support in the future.
The actual way to improve your posture is an exercise program. You have to equalize the strength of all of your muscles and get them working together as a team.