Patent attributes
In some examples, a method includes detecting, based at least in part on sampling a first set (122) of a plurality of sensors of a computing device (110) at a first rate, an indication that the user has initiated a fitness activity (112B), wherein the computing device (110) stores pre-defined identifiers of non-fitness and fitness activities in a set of pre-defined indications of activities; responsive to detecting the indication that the user has initiated the fitness activity, sampling, at a second rate that is greater than the first rate, a second set (120) of the plurality of sensors to determine a probability that the user is engaged in the fitness activity (112B); and responsive to determining that the probability satisfies a threshold, collecting, sensor data for the fitness activity using a particular set of the plurality of sensors that corresponds to a pre-defined identifier for the fitness activity (112B).