Hi all! I am the author of this software. I didn't submit this to Hacker News -- someone else must have! Thank you, whoever you are. I'll try to answer the other questions in the thread now.
This is an awesome project. Thanks for making it. My small suggestion (though it's a big task) would be to allow anonymous data collection when there's a seizure. Getting the sensor data on real seizures I am sure would help a lot in improving detection.