Innovations aimed at promoting good posture, helping consumers get in shape and distributing more health information in the developing world were highlights in an afternoon of mobile-oriented pitches at Demo on Wednesday. The event in Santa Clara, California, featured a total of .

Better backs through Bluetooth

LumoBack showed off a patch that talks to a smartphone app and vibrates when the wearer stands, sits or walks with poor posture. The device, which is about two inches long and looks like an adhesive bandage made of fabric, is powered by a small lithium-ion battery and communicates with the phone via Bluetooth.

The app can display a stick figure that emulates the user's posture based on data from the patch, allowing the user to achieve the correct posture in real time. It can also score the user's posture over time, allow them to set goals and keep track of success, and report how much time they have spent sitting and standing, Chief Technology Officer Andrew Chang said.

"This changes our relationship with technology and with our phones," Chang said. "With Lumo, we are now wearing code."