This is a KaiOS app. I wanted to create an app that would give those without the means to buy expensive technology a way of using what they had to innovate.
Barcodes can be used to represent different products, crypto wallets and email addresses, amongst other things. As KaiOS also has a barcode scanner app this can be used to share small amounts of data between devices without requiring a conventional network.
KaiOS phones are incredibly cheap; the cheapest run around 10 USD; but they support apps like WhatsApp, Google Maps, YouTube and more.
As such, having so many devices out there with both barcode read and write allows technical innovation where it was previously limited by infrastructure.