Headset ear detection

A device capable of providing information to a user through a plurality of different alerting signals, includes a sensing system capable of sensing indications that the device is in a first particular physical relationship to the user's body; an alerting system capable of conveying information to the user through a plurality of different alerting signals, the alerting signals including: a first set of alerting signals and a second set of alerting signals that are such as to be less noticeable to the user if the device is in the first particular physical relationship to the user's body than the first set of alerting signals, the device further including comprising a controller responsive to the sensing system and configured to estimate from the indications whether the device is in the first particular physical relationship to the user's body, and while it is to control the alerting system so as to suppress the provision of information to the user through the second set of alerting signals.