Described is a computer-implemented method performed in connection with a computerized system incorporating an audio capture device, a central processing unit, a display device and a memory, the computer-implemented method involving: capturing an audio signal using the audio capture device; using the central processing unit to analyze the captured audio signal; when the audio signal satisfies a predetermine criterion, using the central processing unit to generate a hash of the captured audio signal; finding a similar audio signal hash among a plurality of stored audio signal hashes; and identifying a device associated with the captured audio signal using the found similar audio signal hash.