An Israeli startup, Pronto.ly, is working on a technology that involves the use of high-pitched soundwaves to establish a contactless connection between two devices. It is being portrayed as an alternative to NFC. The technology requires only that the devices be embedded with a built-in microphone and speakers. No actual data transfer is involved; the technology simply uses ultrasound to identify and authenticate devices within proximity. The data transfer between the devices can then take place through cloud-based backend technology.