My girlfriend has type 1 diabetes and uses this. It's been a huge improvement in her life - as others have mentioned, it's really like the best thing since ins

My girlfriend has type 1 diabetes and uses this. It's been a huge improvement in her life - as others have mentioned, it's really like the best thing since insulin. One thing that's been really awesome to see is how T1D patients and parents with little or no experience with FOSS have taken this stuff: "You mean you guys just made this amazing thing 100% for free?!?!?!". It's like watching the birth of open source all over again :-) The T1D hacking movement is huge - for example, my GF and I recently replaced the batteries in her CGM transmitter (you're not supposed to be able to do this, so it involved a dremel and solder and playing the tiny fingers game). The older transmitters last about 6 months, and then you have to order them through a horrible medical supply company that knows you're not their real customer (your insurance company and device manufacturers are) so this is a big deal. An even bigger deal: the newer Dexcom transmitters turn off after 3 months. Dexcom claims that new features mean they need more juice, but T1D hackers reversing the new protocol discovered that the app they come with turns them off. Fortunately, it seems possible to turn them back on without dremels and the tiny finger game. A closed loop APS is the next step for us :-)