Bluetooth chat apps already exist. I used a really shitty looking (but functional) one called Berkanan that I found by searching the App Store for a Bluetooth chat app to talk to friends on ryan air flights where we weren’t sitting together across Europe last year.

▲

gritzko 3 hours ago | parent [-]

I think FireChat was the first one, in 2011.

	▲	freehorse 2 hours ago \| parent [-]
		I remember when sending messages and files through IR was a standard default feature in (dump) phones two decades ago. It is a bit sad how technology in some ways regresses when certain anti-incentives apply.