The Fitbit Ultra is the second generation of Fitbit Inc’s popular personal health-monitoring device, which tracks your movements and downloads the data wirelessly to your PC. The first Fitbit ...

Today’s smartphones utilize a wide array of accelerometers, gyroscopes and various other sensors in their designs. Relatively unknown is the barometric pressure sensor, which measures air pressure.

In some cities, designers have turned staircases into instruments to make people choose steps over lifts and escalators. One ...