Patent attributes
Systems and methods are disclosed related to determining a likelihood that a user is present in physical proximity to one or more computing devices based on factors such as detecting the user's voice, receiving beaconing signals from a user's mobile device, location information sent from other devices, input received via a camera, and/or other input at various devices that are geographically dispersed. Based on user presence information, which may include interaction timestamps, a system may determine confidence levels regarding which of a number of computing devices are in physical proximity of the user at a current time. The confidence scores may be used to determine whether to broadcast a meeting notification or other notification for the user to a given device for audible or visual presentation by the device.