копать в сторону System.Sensors;
Вот все сенсоры что поддерживаются в FMX
TSensorCategory = (Location, Environmental, Motion, Orientation, Mechanical, Electrical, Biometric, Light, Scanner);
TSensorCategories = set of TSensorCategory;
TLocationSensorType = (GPS, Static, Lookup, Triangulation, Broadcast, DeadReckoning, Other);
TEnvironmentalSensorType = (Temperature, AtmosphericPressure, Humidity, WindSpeed, WindDirection);
TMotionSensorType = (Accelerometer1D, Accelerometer2D, Accelerometer3D, MotionDetector, Gyrometer1D, Gyrometer2D, Gyrometer3D, Speedometer,
LinearAccelerometer3D, GravityAccelerometer3D);
TOrientationSensorType = (Compass1D, Compass2D, Compass3D, Inclinometer1D, Inclinometer2D, Inclinometer3D, Distance1D, Distance2D, Distance3D);
TElectricalSensorType = (Voltage, Current, Capacitance, Resistance, Inductance, ElectricalPower, Potentiometer);
TMechanicalSensorType = (BooleanSwitch, BooleanSwitchArray, MultiValueSwitch, Force, Scale, Pressure, Strain);
TBiometricSensorType = (HumanPresence, HumanProximity, Touch);
TLightSensorType = (AmbientLight);
TScannerSensorType = (RFID, Barcode);