DETECTING A PRIMARY USER OF A DEVICE

摘要

A device may identify a user among multiple individuals detected by comparing a physiological condition, such as a heart rate, of the multiple detected individuals as detected by a camera of the device with a physiological condition of a user of the device using different sensors. A heart rate may be detected by a camera by monitoring blood flow to an individual's face. A heart rate may be detected by a motion sensor by monitoring vibrations of the device that are in an expected frequency range. If a heart rate of a user matches a heart rate of an individual seen by a camera, that individual may be determined to be the user of the device. The position of the individual may be used to then render a user interface.

主权项

1. A computer-implemented method for rendering a position-dependent user interface, the method comprising:
detecting a first face and a second face using a plurality of cameras of a device, the first face and the second face both determined to be looking at a display of the device; monitoring a first rate of skin-color change of the first face using first data from the plurality of cameras; selecting the first rate as a first pulse rate associated with the first face; monitoring a second rate of skin-color change of the second face using the first data; selecting the second rate as a second pulse rate; receiving second data including a third pulse rate from a physiological sensor, the physiological sensor detecting the third pulse rate based on physical contact between the device and a user of the device; comparing the first pulse rate to the third pulse rate; comparing the second pulse rate to the third pulse rate; determining that the first pulse rate is within a certain number of beats-per-minute of the third pulse rate; determining the first face is associated with the user of the device based at least in part on determining that the first pulse rate is within the certain number of beats-per-minute of the third pulse rate; ignoring the second face for head tracking purposes based on determining the first face is associated with the user; selecting the first face for head tracking purposes, the head tracking including determining a position of the first face relative to a plane of the display of the device using data from the plurality of cameras; and rendering a user interface for display based on the position of the first face.