The disclosure relates to accessing computer resources by sensing audio with a microphone. One claim recites a system comprising a software module including instructions for causing a wireless device with cell phone communication capability to: i) extract identifying data from microphone-captured audio, the microphone-captured audio captured by the wireless device; ii) obtain device information for a class of devices associated with the wireless device; iii) control communication of the identifying data and the device information; and iv) control a user interface to provide access to a computer resource based on a service provided by said software module in response to communication of the identifying data and the device information, in which the service is configured to provide access in response to audio prompting, and in which said software module is configured to direct access of the wireless device according to the service; and a network resource comprising a data registry, the data registry providing a correlation between identifying data, device information and response information, the network resource configured to provide the service to said software module including providing the response information to said software module, the response information being associated with the identifying data and the device information. Of course, other claims and combinations are provided as well.