But NFC is a few years off, and Zoosh is here right now. Zoosh, coming from a small Silicon Valley startup, is a software solution that uses the audio hardware found in phones to communicate. As every phone is necessarily equipped with a speaker and microphone, Zoosh saw an opening to use that hardware, rather than create something new. To send data (whether it's a URL, a phone number, or payment information), Zoosh broadcasts ultrasonic audio in a frequency not audible to human ears, around 20,000Hz. A speaker in another phone (or, later, a point-of-sale unit, which the startup claims can be upgraded for only $30) picks up that audio and translates it back into the intended data. You can see it in action in this wholly Silicon Valley video.