THE Interaction REVOLUTION driven by A.I. We offer a software-only tool kit to enable HCI via machine-learning. Our solution is a software development tool kit (SDK) for wearable developers and manufacturers looking to enable new possibilities and functions on and around the device. The ProximityHCI SDK enables the conversion of over 32 pre-defined Off-Screen interactions. The technology is based on skin/air borne vibrations, electromagnetic and environmental acoustic properties to allow users to interact with electronic devices on and around the device in a natural and simple way.