Secrets of Your Device

Secrets of Your Device is a museum of what the device in your hand is sensing right now. Every number on screen is a live reading taken at that moment. There is no simulation and nothing computed to stand in for a measurement. Which means nothing happens in this app unless you physically move the device. ■ Nine rooms • Accelerometer: why it reads 1.0 G while sitting still. Tilt to settle the ball in the centre • Gyroscope: it measures the rate of turning, not the direction. Turn exactly 90 degrees • Barometer: height from the weight of the air. Measure a building's height per floor • Magnetometer: hunt for magnets in the room, and see why a heading needs gravity too • Depth camera: how far away is that. How LiDAR and TrueDepth differ • Light: the ambient light sensor is out of reach, so the camera's exposure becomes a light meter • Radio: the Bluetooth signals in the air. Pick one…