| 摘要 |
<p>Motion detector modules are disclosed. An example apparatus includes a motion sensor, carried by an insertable storage card, to capture a motion status signal, the motion status signal to be evaluated to determine if the motion status signal represents a characteristic motion of the motion sensor to thereby determine validity of media measurement data collected by a portable device; and an audio sensor, carried by an extension of the insertable storage card, to capture an audio signal from an environment including the portable device.</p> |
