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 I watched Microsoft Build 2026. They are turning Windows into an AI agent OS. Copilot, Manus, every agent racing to live on your machine and touch your files. And I noticed something that nobody seems to be talking about.
Not one of them knows who is talking to it.
They will execute commands from anyone sitting at your keyboard. Right now that is fine because AI agents cannot do much. But agents are getting access to files, money, communications, the ability to run code. When that happens, who is allowed to give it instructions becomes the most important security question on your machine. And nobody is answering it.
That is what I am actually building now. Not a lock screen. An identity layer for AI agents on your PC.
The idea: before any AI on your machine does anything, it knows it is you. Your voice is the key, verified locally, voiceprint never leaves your device. Then there is a permission dial you control. The AI has exactly the access you gave it, nothing more. You can set it to read only, or open apps, or act on its own while you are away. An AI with full access to your PC is terrifying. An AI with exactly the access you chose is something you would actually install.
What works today: voice unlock and a voice assistant you just talk to. It answers out loud, knows who it is talking to, speech to text runs on your device so only text ever goes to the cloud.
What I want to build next and I genuinely do not know which matters more to people so tell me: system awareness so you can ask it about your actual machine, why is my PC slow, what is using all my RAM, is this file worth keeping. Or the remote dial, control it from your phone, approve what it does while you are out, get pinged when something needs you. Or the permission system itself, building the actual trust model for what an AI agent is allowed to do on a personal machine.
The limits right now: Ctrl Alt Del bypasses it because the deep Windows lock layer is not finished. No liveness detection so a recording of my voice would probably work. Assistant talks but does not act yet. Installer is unsigned.
Zero real users outside me. That is why I am posting before building more.
What would you actually let an AI do on your machine? Would identity verification change that? Tell me I am solving the wrong problem.
[github.com/AadiSharma49/Senti] · [senti-kappa.vercel.app]
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