Tinder users will be able to swipe up once per day; those who pay for Tinder Plus (variable pricing depending on location and age) will get five each day.
Project Soli is using radar to enable new types of touchless interactions — one where the human hand becomes a natural, intuitive interface for our devices. The Soli sensor can track sub-millimeter motions at high speed and accuracy. It fits onto a chip, can be produced at scale, and can be used inside even small wearable devices.
Source : Project Soli