[beeflet]

Seems like they ought to use a lower-level system. I hate to see the day when someone's smartphone-based pacemaker or whatever crashes or gets hacked and kills the person attached.

You could have a low power system like ESP32 or STM32 act as the artificial pancreas and transmit data to a smartphone over BT

[grahar64]

The only blocker for a lot of these things to exist is just someone to make it. There is no money in it, the software is life and death sometimes, the total amount of users you can reach is world wide is probably like 2-3 million. The only stopper is just someone making it.

[lazyasciiart]

seems like you ought to build it.