⚡ NanoRecall: 100% Private Desktop Memory & Screen Search

A high-performance, open-source, 100% private alternative to Microsoft Windows Recall.
Engineered with pure C99/SIMD, native Win32 capture, and zero cloud telemetry. Search anything you saw on your screen by natural language in milliseconds.

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⚡ The Problem with Microsoft Recall

Feature	Microsoft Windows Recall	NanoRecall (This Project)
Privacy & Cloud	Unencrypted storage, telemetry risks	100% Local & Encrypted (Zero bytes leave your PC)
Hardware Lock-in	Requires expensive Copilot+ PC ($1500+) with 40+ TOPS NPU	Runs on any standard Intel / AMD / ARM CPU
Vector Engine	Heavy proprietary runtime	NanoVector (Pure C99 + AVX2, <120KB footprint)
Search Latency	Variable (Cloud / NPU overhead)	0.28 ms (Sub-millisecond exact semantic search)
Password Protection	Records sensitive credentials and cards	Privacy Shield: Auto-ignores 1Password, Bitwarden, KeePass, Incognito
Storage Footprint	Tens of gigabytes of raw frames	Smart Frame Differencing: Suppresses static frames (30–60 KB/frame)
Code Footprint	Gigabytes of OS bloatware	<200 KB pure codebase, <25MB RAM idle, 0.1% CPU

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🌟 Key Highlights

• 100% Private & Offline: All frame embeddings and OCR snippets are stored in a single, local .nvec binary file. No accounts, no API keys, no internet required.
• Powered by NanoVector: Directly uses NanoVector's C99 AVX2/NEON vector search engine for instant 90-microsecond semantic retrieval.
• Intelligent Perceptual Frame Differencing: Continuously monitors your display; if the screen hasn't changed by >1.5% (reading, idle, away from desk), capture is skipped to conserve disk space and battery.
• Built-in Privacy Shield: Automatically detects active foreground windows and terminates recording whenever password managers (1Password, Bitwarden, KeePass), private browsing windows (Incognito, InPrivate), or crypto wallets are active.
• Dual Interface: Instant lightning-fast terminal CLI (nanorecall search ...) and a sleek dark-mode local web dashboard (nanorecall ui).

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🏛️ Architecture

                     ┌────────────────────────────────┐
                     │     Windows Desktop Display    │
                     └───────────────┬────────────────┘
                                     │
                        (Perceptual Diffing / 0.1% CPU)
                                     │
                     ┌───────────────▼────────────────┐
                     │    Native Win32 Screen Capture │
                     │  (GDI / BitBlt / DirectMemory) │
                     └───────────────┬────────────────┘
                                     │
                     ┌───────────────▼────────────────┐
                     │    Offline Text Extraction     │
                     │  (Windows.Media.Ocr / Local)   │
                     └───────────────┬────────────────┘
                                     │
                                     ├───────────────────────────────┐
                                     │ Text + Embeddings             │ Compressed Frame
                                     ▼                               ▼
                     ┌────────────────────────────────┐  ┌───────────────────────┐
                     │       NanoVector Core          │  │   Local Image Store   │
                     │  (C99 AVX2 + .nvec persistence)│  │   (WebP / 30-60 KB)   │
                     └───────────────┬────────────────┘  └───────────┬───────────┘
                                     │                               │
                                     └───────────────┬───────────────┘
                                                     ▼
                                     ┌────────────────────────────────┐
                                     │     Search & Recall Engine     │
                                     │   (CLI + Dark-Mode Dashboard)  │
                                     └────────────────────────────────┘

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🚀 Interactive Google Colab Demo

Test NanoRecall interactively in your browser with zero local installation:

The Interactive Colab Notebook demonstrates:

• Backend & SIMD Detection: Verifying NanoRecall and NanoVector AVX2/NEON.
• Privacy Shield: Live simulation blocking 1Password/Incognito windows and redacting API keys.
• Desktop Memory & Search: Ingesting sample desktop screens and querying via natural language in <0.3 ms.
• Single-File .nvec Persistence: Saving and restoring the entire screen memory index.
• Colab CPU Benchmark: Benchmarking search latency (15–300 µs) and QPS over 10,000 frames.

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🚀 Quickstart

1. Installation

pip install nanorecall

(Requires Python 3.9+ on Windows, Linux, or macOS)

2. Capture Your Screen

Capture and index your current desktop state:

nanorecall capture

Output:

📸 Capturing desktop screen...
🔍 Extracting offline OCR text...
🧠 Indexing into NanoVector (Window: Active Window)...
✅ Indexed frame 2026-09-11_142315 (342 words, 98.4% change)

3. Natural Language Search (CLI)

Search for anything you saw hours, days, or weeks ago:

nanorecall search "github pull request sqlfluff"

Output:

🔍 Search Query: 'github pull request sqlfluff' (1 results found in 0.28 ms)

#1 [98% Match] Google Chrome — sqlfluff pull request 8449 github
   🕒 Captured: 2026-09-11_142315
   📝 Text:     merged upstream/main to pull in CI fix and added StarRocks test cases...
   🖼️  File:     C:\Users\M_N_N\.nanorecall\frames\2026-09-11_142315.webp

4. Interactive Web Dashboard

Launch the local dark-mode dashboard with visual timeline scrubber:

nanorecall ui

Then open http://127.0.0.1:8765 in your browser.

• Interactive daily timeline scrubber (scrub your day hour-by-hour).
• Instant search bar with live autocomplete and semantic similarity badges.
• Click any memory card to inspect the full-resolution screenshot with OCR highlights.

5. Background Daemon

Run NanoRecall silently in the background:

nanorecall daemon --interval 3.0

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🛡️ Privacy Shield Rules

NanoRecall includes out-of-the-box protection rules. The following windows and sensitive tokens are automatically shielded from being recorded:

• Password Managers: 1Password, Bitwarden, KeePass, KeePassXC, LastPass, Dashlane, NordPass, Enpass.
• Private Browsing: Chrome Incognito, Edge InPrivate, Firefox Private Browsing, Tor Browser.
• Crypto Wallets: MetaMask, Phantom, Ledger Live, Trezor Suite, Exodus, Rabby.
• Credentials & Tokens: Credit card numbers, OpenAI API keys (sk-...), GitHub personal access tokens (ghp_...), and SSH/RSA private keys are automatically redacted.

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📊 Telemetry & Benchmark

nanorecall stats

⚡ NanoRecall Engine Telemetry:
----------------------------------------
Total Indexed Frames: 1,420
Vector Dimension:     128D
Active Backend:       NanoVector (AVX2)
Local Database Size:  1.24 MB
Search Latency:       0.28 ms
Idle CPU Usage:       < 0.1%

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🤝 Contributing

Contributions are warmly welcomed! Please submit issues or pull requests to improve OCR backends, UI features, or compression optimizations.

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📜 License

Distributed under the MIT License. Created by eminsk.