| CPC H04N 21/44218 (2013.01) [H04L 67/535 (2022.05); H04L 67/54 (2022.05); H04N 21/4394 (2013.01); H04N 21/8358 (2013.01)] | 20 Claims |

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1. A portable meter device comprising:
an audio sensor;
a network interface;
a processor; and
a memory having stored thereon machine readable instructions that, when executed by the processor, cause the portable meter device to perform operations comprising:
obtaining, via the audio sensor, an audio sample of a media presentation environment;
generating first media identifying data based on the audio sample;
obtaining, via the network interface, second media identifying data from a meter device associated with a media presentation device disposed at the media presentation environment;
generating, based on the first media identifying data and the second media identifying data, a presence status characterizing a presence of a user at the media presentation environment; and
transmitting, via the network interface, the presence status to a remote server.
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