The PhonePe POS is a Point-of-Sale device to receive payments in small retail stores easily. It allows customers to make proximity payments over BLE, without needing Internet infrastructure at the store. The POS works like a calculator, and payments can be accepted by pressing just one button.
The POS is designed on top of the calculator interface to make it extremely easy for merchants to learn and use. Trustworthiness, simplicity, ease of use and low cost were important values in the design process.
I led a very small team on this project. We worked on all aspects of the project from idea to market, some of which are listed below: brainstorming, prototyping, PCB design, firmware development, vendor selection, production tooling, wireless certification, logistics, Android app development