I have an existing wrist-worn product that uses the MMA8451Q and I would like to add human fall detection as a feature. I've read some research papers and looked at existing products like the Philips Lifeline and all use a pendant or attach the sensor to the wait or torso. I do not want to waste my time trying to make fall detection work on a wrist device if the false detection rate is too high. Does anyone have any opinions or research on wrist-worn fall detectors? Also, I saw a NXP reference manual titled MMA7260QHFDRM Human Fall Detection Using 3-Axis Accelerometer but could not find any of the sample code it mentions. Is this manual still valid and can I get the sample code somewhere? Is there a sample algorithm for the MMA8451Q on fall detection? I do not believe the freefall detection interrupt is sufficient to cover human falls.