It used to be that when you wanted to improve your posture, you would put a large hardbound book on your cranium and practice walking with it. Just one of the many things I learned from old TV shows. Thank you magic moving picture box. Your parents can do the same thing by telling you to stand up straight, but you may not live with them any longer and need some reminding before you turn into Quasimodo.
The iPosture is a small device that can be clipped onto clothing or stuck to the skin. When it senses that you aren’t sitting or standing with a straight back, it wll nag you through vibration until you straighten up. After a while, proper posture should be second nature to you.