| 摘要 |
A mobile device may include a geopositioning receiver and an accelerometer, which may be engaged in an alternating manner depending on whether the mobile device is at rest or in motion. If the mobile device is in motion, the geopositioning receiver may remain engaged to provide a real-time location of the mobile device, which may be used to generate various location-triggered notifications and to control location-triggered applications. If the mobile device is at rest, the geopositioning receiver may be disengaged to reduce power usage and instead the accelerometer may be engaged to monitor whether the mobile device is put back in motion. If so, the geopositioning receiver may be reengaged. A sequence of locations where the mobile device came to rest may be stored to construct a location profile, which may allow closely targeted offers and advertisements to be generated based on the daily activity patterns of users. |
