Techniques for tracking a current location of a user are described. According to various embodiments, an ambient noise signal proximate to a user device is detected using a microphone. Audio sample information may be accessed, where the audio sample information identifies various audio samples and, for each of the audio samples, a source of the corresponding audio sample. Thereafter, a specific audio sample corresponding to the ambient noise signal may be identified. Moreover, a current location of the user device may be determined, based on the source of the specific audio sample.