1. A method of content recognition comprising: receiving an audio signal captured from a microphone; sampling the audio signal at a first resolution to provide a first sampled audio signal; computing at least a first audio fingerprint from the first sampled audio signal; transferring the first audio fingerprint to a remote server, and in response, receiving metadata identifying a TV show, advertisement, movie or song from which the audio signal has been captured; sampling the audio signal at a second resolution to provide a second sampled audio signal; extracting a multibit payload encoded in the second sampled audio signal; transferring the multibit payload to a remote server, and in response, receiving metadata indexed by the multibit payload; and providing for display on a display device the metadata identifying a TV show, advertisement, movie or song and the metadata indexed by the multibit payload.