Abstract: Example apparatus disclosed herein determine that an output media signal from a monitored media device corresponds to at least a first media signal from a first source device in communication with the monitored media device, and a second media signal from a second source device in communication with the monitored media device. Disclosed example apparatus also access motion data reported by one or more of a first accelerometer associated with a first remote control device, a second accelerometer associated with a second remote control device, a third accelerometer associated with a third remote control device, the first remote control device associated with the first source device, the second remote control device associated with the second source device, the third remote control device associated with the monitored media device. Disclosed example apparatus also identify, based on the motion data, a source of the output media signal from the monitored media device.

Abstract: Example methods disclosed herein to resolve media source detection ambiguities include detecting an ambiguity condition associated with media source detection when monitoring media presented by a media output device in communication with at least two media source devices, and in response to detecting the ambiguity condition, determining a source of the media output from the media output device using motion data reported by accelerometers affixed to remote control devices associated with the at least two media source devices. Example methods disclosed herein to resolve simulcast crediting ambiguities include detecting an ambiguity condition associated with simulcast broadcasting when monitoring media presented by a media output device, and in response to detecting the ambiguity condition, adjusting a time associated with a channel change using motion data reported by an accelerometer affixed to a remote control device associated with the media output device.

Abstract: Example methods disclosed herein to resolve media source detection ambiguities include detecting an ambiguity condition associated with media source detection when monitoring media presented by a media output device in communication with at least two media source devices, and in response to detecting the ambiguity condition, determining a source of the media output from the media output device using motion data reported by accelerometers affixed to remote control devices associated with the at least two media source devices. Example methods disclosed herein to resolve simulcast crediting ambiguities include detecting an ambiguity condition associated with simulcast broadcasting when monitoring media presented by a media output device, and in response to detecting the ambiguity condition, adjusting a time associated with a channel change using motion data reported by an accelerometer affixed to a remote control device associated with the media output device.