I haven’t seen this topic brought up anywhere (or if this is even the correct forum for such a topic).
Android’s nearby share function is akin to Apple’s air drop, though with wider hardware compatibility as part of the protocol.
It’s an open protocol and implementation, though I can’t comment on the complexity of it.
It feels like a great fit for the Gnome ecosystem, so I wanted to gauge the interest level, especially from anyone on the design team if they happen to be lurking here.
FWIW we already something similar. If you go to Settings → Share (may have moved after 43) and enable file sharing, you have a WebDAV file share that is advertised to nearby devices thanks to zeroconf (via avahi).