Samples rates of accelerometers are usually around 100Hz, so 10ms between each sample. Some phones might be as high as 250Hz which might start to be usable. One

Samples rates of accelerometers are usually around 100Hz, so 10ms between each sample. Some phones might be as high as 250Hz which might start to be usable. One challenge when using different sensors is to establish a joint timeline precisely. Might need to synchronize them with an event observed in both at the same time, like the 'clapper' used in filmmaking.