This sounds great! The main barrier I see is getting everyone I want to install the app. Perhaps a "mass-SMS" variant could work, so it's independent of whatever messaging apps everyone runs.

Direct Medtronic insulin pump -> Pebble watch connection, so I can read my blood glucose easily without a phone nearby. It's incredibly useful!

This builds on some marvellous reverse engineering work done over at https://github.com/OpenMinimed.

Here's the watchface: https://apps.repebble.com/b785c22984c843299e95bba0

I'm not sure why but this seems very phone dependent. I can stand next to another person, both running Merlin in silence, and mine will pick up much more than some people's phones. My phone is not particularly new (Zenfone 8).

I noticed these for the first time earlier this summer. Incredible insects! They really do give a hummingbird impression.