A pice of paper that carry Bitcoin on the Lightning Network for offline payment with a tap. It stores all the information on QR code and NFC Tag stickers that's needed to manage. Its a digital wallet with an analog backup.
Cash is dirty, heavy and hard to settle up. With papersats cash gets superfluous when it comes to local micropayment.
An active developed open-source stack is used to bring Bitcoin Lightning payment to the crowd.
Scalable Off-Chain Instant Payments. A Network of Micropayment Channels Solve Scalability.
Build your own Lightning & Bitcoin Fullnode on a RaspberryPi with a nice Display.
LNbits is a very simple Python server that sits on top of an lightning-network funding source.
The Bolt Card is a physical card that allows users to access the popular tap-to-pay function we see today with modern debit and credit cards.
There are many gears working together now to bring a simple payment solution for providers and users.