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Table 2 Time overhead for different sensors at different sampling rate and under different policies

From: Sensor Guardian: prevent privacy inference on Android sensors

Sensor type Sampling rates Original mean time interval between events (int orig, unit: μs) Policies Absolute time overhead (int inst− int orig, unit: μs) Relative time overhead ((int inst− int orig)/int orig, unit: 0 /000)
  Fastest 8392.208918 Allow All 0.07 0.08
    Deny All 0.001 0.001
Accelerometer    Randomization 0.02 0.02
  Game 20141.28197 Allow All 0.08 0.04
    Deny All 0.03 0.01
    Randomization 0.16 0.08
  Fastest 16784.63194 Allow All 0.008 0.005
    Deny All 0.009 0.005
Magnetic field    Randomization 0.002 0.001
  Game 20141.59088 Allow All 0.02 0.009
    Deny All 0.004 0.002
    Randomization 0.04 0.02
  Fastest 5035.314463 Allow All 0.003 0.001
    Deny All 0.01 0.02
Gyroscope    Randomization 0.01 0.01
  Game 20141.28592 Allow All 0.16 0.08
    Deny All 0.12 0.06
    Randomization 0.03 0.02