How screen memory works
A screen memory tool captures your screen as you work, understands what it contains on-device, and indexes it with context: which app it came from, which window, and when. The result is not a folder of screenshots; it is a structured record you can query. Search for an error message you saw on Tuesday, and it returns the exact capture, in the right app, at the right time.
Good implementations layer two kinds of search on top of that index: keyword search for exact strings (names, error codes, snippets of code) and semantic search for fuzzy recall ("that article about caching I read last week"). Some also capture audio alongside the screen, so meetings and calls become part of the same memory.
Screen memory vs. screen recording
A screen recording is a video file: hours of pixels you have to scrub through by hand. Screen memory inverts that — it treats the screen as a stream of information, not footage. Because the text is extracted and indexed, a month of work is answerable in one search instead of hours of scrubbing.
The category became widely known through tools like Rewind (shut down in December 2025), Microsoft Recall, and OpenAI’s Codex Chronicle — each with a different answer to the question that actually decides whether screen memory is safe to use: where does the record live, and who can read it?
Why "local" is the load-bearing word
Your screen is the most sensitive data stream you produce — it contains your messages, documents, credentials, and everyone else’s names. A screen memory that uploads captures to a vendor’s cloud turns all of that into someone else’s database. That is why the serious debate around Microsoft Recall was never about usefulness, and why privacy-minded tools process and store everything on-device: the memory is only trustworthy if it stays on the machine that produced it, encrypted at rest.
How LUCI does screen memory
LUCI remembers your whole day on the computer — screen and audio, meetings, code, email, everything in between — understands it on your own Mac or Windows machine, and stores it encrypted at rest. Nothing is uploaded, and it keeps working with Wi-Fi off. You can ask in your own words and get back the exact moment, and the Agent Bridge hands that same memory to whichever AI agent you use: works with Claude, Cursor, and Codex — LUCI connects itself, nothing to set up.
Frequently asked questions
Is screen memory the same as Microsoft Recall?
Recall is one implementation of screen memory: Windows-only, built into Copilot+ PCs, and focused on retracing your own steps with screenshot search. The broader category includes cross-platform tools, tools that capture audio and meetings alongside the screen, and tools that expose the memory to AI agents. LUCI does all three, on Mac and Windows, with everything stored locally.
Does screen memory record video of my screen?
Not in the video-file sense. Screen memory tools periodically capture what is on screen and extract its text and context into a searchable index. The point is recall — finding the exact moment again — not producing footage to scrub through.
Is screen memory private?
It depends entirely on where processing and storage happen. If captures are uploaded to a vendor’s cloud, your screen — messages, documents, credentials — becomes their data. If capture, understanding, and storage all happen on your own device with encryption at rest, as in LUCI, the record is only readable on your machine. The test is falsifiable: turn off Wi-Fi and see whether the tool still works.
What can AI agents do with screen memory?
A screen memory with an agent interface turns "context" from something you paste into something the agent fetches. Connected over MCP, an agent can search text you saw, pull up the error message from this morning, or summarize what you were doing between two points in time — without you re-explaining or re-uploading anything.
How much disk space does screen memory use?
Far less than video recording, because what is stored is primarily extracted text, context, and periodic captures rather than continuous footage. Storage grows with how much you work — and because it is local, it lives on your own disk rather than against a vendor’s quota.