Table 24: Analysis of the accuracies reported by the Android library using the accelerometer sensor.

Stages	Accelerometer	Accelerometer Microphone	Accelerometer Microphone GPS
Stage 1	86.39%	86.39%	86.39%
Stage 2	-	45.68%	45.68%
Stage 3	-	100.00%	100.00%
Overall	86.39%	58.02%	67.05%