1. A method of performing an action in a device based on receipt of and/or exposure to audio, comprising: receiving audio at the device, the audio having a monitoring code indicating that the audio is to be monitored; in response to detection of the monitoring code, generating a signature based on the audio using at least a portion of the audio containing the monitoring code; and causing the performance of the action at least in part by the device based on at least one of the monitoring code or the signature.
1. A method of performing an action in a device based on receipt of and/or exposure to audio, comprising: receiving audio at the device, the audio having a monitoring code indicating that the audio is to be monitored; in response to detection of the monitoring code, generating a signature based on the audio using at least a portion of the audio containing the monitoring code; and causing the performance of the action at least in part by the device based on at least one of the monitoring code or the signature. 7. The method according to claim 1 , wherein the action comprises transmitting at least one of the monitoring code or the signature from the device for processing, and receiving data in the device generated based on the processing.