Far worse, it's very easy to know when a person is going to be asleep even with no more data. You can use location in part, yes, but health tracking can sort o

Far worse, it's very easy to know when a person is going to be asleep even with no more data. You can use location in part, yes, but health tracking can sort out your patterns very well and determine exactly what you are next likely to do without having any further data points (if you turned off and took off all devices). It's all trainable.