Sensitivity von HTTP5 Sensoren

• Accelerometer is quite sensitive but a little noisy.
• Gyroscopes are extremely sensitive but they have drift that has to be corrected.
• Altitude sensors are good up to a few centimeters.
• Temperature sensors are slow to update since they are on the inside of the phone.
• GPS is accurate to 5m on the outside 4km inside a building.
• Network location is accurate to 50m both inside and outside a building.
• Wifi location conbined with the two above can get you 2–3m accuracy inside a building.
• Magnetometer(compass) is fast to update but has some interference from the phone and nearby magnetic fields/metals esp ferometals.
• Cameras are extremely good even compared to profesional cameras 5y ago.
• Microphones are really good.

Mein Web App verwendet Accelerometer für Shake events

Ground Truth in Sensors

Ground Truth == Labeled Dataset in ML

Eigenschaften vom Smartphones

kleine Displays, Hochformat