Abstract: A device can receive fuel information associated with a vehicle and location information associated with the vehicle. The device can determine a home location associated with a user of a client device and a destination location associated with the user. The device can determine an estimated fuel usage, of the vehicle, associated with a route between the home location and the destination location. The device can determine an estimated quantity of trips between the home location and the destination location. The device can generate refueling information, associated with the vehicle, wherein the refueling information includes information identifying at least one of: the estimated quantity of trips between the home location and the destination location, a recommended date and time to refuel the vehicle, or a recommended refueling location. The device can transmit the refueling information to the client device.

Abstract: A filter processes acceleration magnitude signals from an accelerometer device to output spectral content related to walking and running. A device containing the accelerometer determines steps by qualitatively analyzing the processed acceleration signals to determine whether increased acceleration magnitude results from a step impact from running or walking activity. The device may analyze the acceleration signals to determine crossings of an axis at zero magnitude, which crossings typically correspond to a person's foot impacting the ground, and may analyze the period between the zero crossings. The step count can indicate whether the device, in a height determination mode, is moving in a vehicle; if analysis of accelerometer signals indicates no stepping or running, but another circuit of the device indicates rapid movement, the device assumes it is moving in a vehicle, and resets a height above ground value to zero upon determining resumption of walking or running activity.