HOW LOCKE WORKS · 100% LOCAL
See how Locke protects your data
Locke is the local privacy layer for every AI app on your device — coming soon for Windows and Linux. Everything below runs the same way it will in the app: no servers, no network calls, nothing leaving your machine.
No data leaves
Detection and protection happen entirely on your device.
Nothing to trust
No servers means no third parties with access to your data.
Nothing to breach
If we don't have it, it can't be leaked, sold, or subpoenaed.
What Changes
Your prompt, protected
Locke detects and replaces sensitive data before it reaches the AI. The AI sees placeholders (tokens) — never the real thing. When the reply comes back, Locke restores the real values for you.
Summarize the legal exposure for Margaret Chen (SSN 471-83-2914) in case CV-2024-00847. Her counsel at martinez.l@whitfield.law flagged potential HIPAA violations related to patient records shared with third-party vendors.
4 sensitive items exposed to the AI model
Summarize the legal exposure for {{NAME_1}} (SSN {{SSN_1}}) in case {{CASE_1}}. Her counsel at {{EMAIL_1}} flagged potential HIPAA violations related to patient records shared with third-party vendors.
0 sensitive items reach the AI — meaning preserved
CORE FEATURES
How protection works, layer by layer
Each layer works independently and runs entirely on your device. Select one to explore.
3
Total Unprotected
Prompts sent without full protection enabled
47
Data Detected
Sensitive items flagged by Dagger across sessions
12
Uploads Blocked
File attachments blocked before reaching AI servers
44
Data Removed
Sensitive items masked or tokenized before submission
Export comprehensive reports
Generate a hashed, uneditable PDF report with detailed logs including timestamps, detection categories, risk levels, actions taken, and session context — all from data that never left your machine.
All metrics are computed locally. Nothing is transmitted, stored remotely, or shared with Sonomos.
DETECTION COVERAGE
36 detectors, 70+ categories
Checksum-validated regex plus semantic detection — here's a sample of what Locke catches, grouped by type and risk level.
NEXT
Coming SoonLocke — privacy everywhere you use AI.
Locke, our desktop app, will protect every AI app on your computer — including native apps like ChatGPT Desktop, Claude Desktop, Ollama, and any IDE or tool that talks to an AI — not just what happens inside your browser. Everything still runs locally.
macOS support is planned.
Get early accessUsing Claude Code? Canary — our free, open-source Claude Code plugin — shows every piece of sensitive data you've already shared.
Curious about the underlying concepts? See data masking, tokenization, and contextual matching. Or compare Locke to other approaches.
