| CPC H04N 21/25883 (2013.01) [H04L 67/535 (2022.05)] | 20 Claims |

|
1. An audience measurement meter configured to perform a set of operations, the set of operations comprising:
identifying multiple dual-tone multi-frequency (DTMF) tones audibly presented by a media presentation device within a section of audio during a media session, wherein a length of the section of audio is less than one second;
determining a panelist identifier of a panelist associated with the media session;
correlating the multiple DTMF tones with a session identification value using a tone identification database, wherein the session identification value is usable by a media provider to link demographics of the panelist with media presented by the media presentation device during the media session; and
reporting the session identification value and the panelist identifier to a server.
|