Abstract:
Systems and methods are disclosed for identifying users of portable user devices according to one or more accelerometer profiles created for a respective user. During a media session, the portable computing device collects media exposure data, while at the same time, collects data from the accelerometer and compares it to the user profile. The comparison authenticates the user and determines the physical activity the user is engaged in. Additional data may be collected from the portable computing device to determine one or more operational conditions of the device itself. Accelerometer data may also be used to determine probabilities that one or more users were actually exposed to a media event.
Abstract:
Apparatus, system and method for accessing supplementary data on a device capable of receiving multimedia are disclosed. After multimedia is received, ancillary code is detected from an audio portion of the multimedia. The ancillary code includes a plurality of code symbols arranged in a plurality of layers in a predetermined time period, wherein data associated with the supplementary data is arranged in at least one of the plurality of layers. Supplementary data is accessed using the data associated with the supplementary data.