tl;dr:"A few years ago, I came across this awesome talk about AirplaneJS, a web app that picks up radio signals from airplanes and plots them in real time on a map in the browser. I had no idea this was possible in JavaScript so I started looking into it. I played around with the project and started wondering if there was a way I could push it a little bit further."
tl;dr:"I came across the concept of Ultrasonic Payments, a technology based on transferring data through inaudible sounds, and decided to experiment and look into how to implement such a payment method with Stripe."