Life, exactly
as it was.
Every conversation, every moment, every small decision that turned out to matter — preserved with the fidelity your memory deserves, and yours alone to access.
ISO/IEC 27001 certified · Zero-knowledge encryption · Est. 2002
What are you without
your memories?
The experiences that define us live in our minds, not in photographs or journals. The conversations we return to, the moments we reach for when we need to remember who we are, they exist in a form that's irreplaceable, impermanent, and onlt our own.
For most of human history, the loss of those experiences has been accepted as a fact of life. Keepsake was founded on the conviction that it does not have to be, and that the record of a life can be preserved with the same fidelity with which it was lived, and returned to the person who lived it, intact and true-to-form.
We are a Public Benefit Corporation. Our stated purpose is the advancement of human psychological wellbeing through access to lived experience. This both a legal commitment and a mission statement. It's why we exist, and we answer to it before anything else.
Three layers. One archive.
Capture
The Keepsake Three implant passively records your sensory experience, including ambient audio, visual context, physiological state, all at the neural level. There's no interaction required, and no interruption to how you live.
Index
Your Vault indexes every captured detail against a continuous timeline. Your conversations, locations, recurring patterns, and emotional register are all searchable, at any time you want.
Experience
Access your archive through the Keepsake interface. Search by keyword. Browse the timeline. See which experiences you return to most. It's your record, on your terms, all private and focused ont the human.
24 years of neuroscience research.
Keepsake began as a clinical tool for a research program for Alzheimer's patients at MIT's Media Lab, funded by the NIH and peer-reviewed across twelve years before the technology ever reached the public. The architecture that indexes your experiences was built in the context of medicine, not of software or capital.
Twelve early-stage Alzheimer's participants at UPMC. Recorded experiences reduced clinical distress in follow-up assessments.
The neural indexing architecture published in Nature Neuroscience. Independently replicated at four institutions within eighteen months.
Third-party audited. Zero-knowledge architecture independently verified. Findings published in full.
One of the most widely deployed medical devices in human history. We declined three acquisition offers, and still operate humanely.
What it means to have the record.
"When my mother was diagnosed with Alzheimer's, I understood for the first time what it means to lose access to your own life. As soon as I could, I got chipped six years later since I had seen what it would mean to be without it."
"Our son is three. I know I won't remember what his voice sounds like at this age, and neither will he. I'm saving recordings in my Vault to open with him later once he grows up."
"My work often requires me to remember, very precisely, conversations that often only turn out to matter months later. Keepsake doesn't change how I work, but I now I've stopped worrying about whether I remembered correctly."
"There are years I needed to remember differently just to get through them. I get why perfect memory sounds scary, but knowing the record is there if I want it (and completely private if I don't) has been emotional in ways I didn't expect."
Yours to leave with
Your archive exports in full at any time, in an open format we do not control. Closing your account does not erase your record unless you explicitly request it. The data was never ours to keep.
Zero knowledge
Keepsake cannot read your archive. Our servers hold only encrypted blobs. The decryption keys are generated on your implant and are never transmitted to us in readable form.
Independent oversight
An independent board with genuine authority reviews our practices, compels internal audits, and publishes findings without our approval. Their conclusions are not subject to our editorial review.
Your record.
Your keys.
Our servers only hold data we cannot read. The unique keys that unlock your archive live on your implant alone. It is a technical constraint that we cannot reverse without redoing surgery.
Ready to remember.
Walk through the Keepsake experience and see what your archive looks like.
Your walkthrough is personal to you.