Methods and systems of accessing sensor-based driving data

A method comprising:

• detecting a waking event associated with an application stored on a mobile device, the waking event indicating that a drive has been initiated;
• activating the application in response to detecting the waking event;
• receiving, from a cache memory of the mobile device, first sensor data from a first sensor, the first sensor data including measurements from the first sensor collected during a recorded time interval that preceded the waking event;
• receiving, by the application, second sensor data from one or more second sensors after the waking event, the second sensor data including measurements from the one or more second sensors collected after the waking event;
• generating a set of sensor signals from the first sensor data and the second sensor data;
• extracting from the set of sensor signals one or more statistical features;
• and
• executing a classifier using the one or more statistical features to generate a prediction of a characteristic of the drive.

A system comprising:

• one or more processors;
• and
• a non-transitory computer-readable medium storing instructions which, when executed by the one or more processors, configure the system to:
• detect a waking event associated with an application stored on a mobile device;
• activate the application in response to detecting the waking event;
• receive, from a cache memory of the mobile device, activity data for a recorded time interval preceding the waking event;
• and
• detect, using the activity data, a missed trip by:
• identifying, from the activity data, a first time in which the activity data indicates a high probability of automotive activity;
• identifying, from the activity data, a second time in which the activity data indicates low probability of automotive activity, wherein the second time occurs after the first time;
• determining that the missed trip occurred over a first time interval that extends between the first time and the second time;
• and
• receive, in response to determining that the missed trip occurred over the first time interval, sensor data for a second time interval that begins prior to the first time and ends after the second time, the sensor data being stored in association with an indication of the missed trip.