Young entrepreneur Lucas Duplan said his startup, Clinkle, has figured out a way for people to pay for things in a physical store without using cash or credit card. And, it doesn’t require a mobile card reader, the hardware popularized by payments company Square.

“No one has really cracked the nut,” Duplan said, adding that none of the apps currently available can really help people leave their physical wallets behind. He leaves the door open for other benefits, like how to use consumer’s shopping habit data to create other features. [Read more…]