Honest story because the pivot is the interesting part. Six months ago I wanted to replace the Windows lock screen with voice recognition. Not a passphrase, actual speaker verification. Say anything, it checks your voiceprint on your own machine, unlocks. A friend says the same words, rejected. Got it working. Then I realized nobody needs this. Windows Hello does biometric unlock for free. I was building a worse version of something that already exists. I almost quit the whole thing. Then ...