Full disclosure: I work for an audio beacon startup (in bio). It's great to see this article getting attention. I also shared it two days ago in a comment on

Full disclosure: I work for an audio beacon startup (in bio). It's great to see this article getting attention. I also shared it two days ago in a comment on a story about audio beacons (https://news.ycombinator.com/item?id=10563134 https://news.ycombinator.com/item?id=10563134). Mainly my goal was to remind people there are some realistic use cases where audio beacons >> BLE beacons. For some reason audio beacons seem to be often forgotten about as a viable alternative.