Identity providers and registries
They prove attributes on request and learn nothing about the person.
The Cyber-Human Duo
KYOU pairs one person with one AI agent for life. The pair is the Duo. The agent runs on your device, learns from what you do and acts for you in every job, inbox and year. The model of you stays in your hands.
KYOU is a standalone app. It is built to be wallet-ready, so that it can work alongside the European Digital Identity Wallet and later sit inside it.
KYOU replaces central processing with local sensing and responding.
Mail, offers and news are checked on your device for relevance and threat before you see them.
The agent prepares replies and actions. Nothing is sent until you approve.
Ask what happened, what you promised or how long a project took.
Other AI tools receive context case by case. You read it before it goes.
Preview
These are design mockups of the desktop app and the iPhone app. The software is under construction. The screens below are pictures of the design and are not running code. The people and messages in them are invented.
Privacy at a glance
Every part of KYOU that learns about you runs on your own device. Local processing is the security model itself. Data that never leaves the device cannot be intercepted, retained or disclosed by anyone else.
The name
KYOU is the romanised form of きょう (kyō). Written 今日, it means today. A Duo works from the evidence of today, and each day's actions go onto one cord. The 24-hour dial in the mark stands for that day.
The same sound is written 教 in 教師 (kyōshi, teacher) and 教育 (kyōiku, education). The agent built into KYOU learns from you. It also teaches you. Human and machine together form the Duo, a learning loop in which each improves the other. The agent is its digital half.
Read in English, the name ends in "you".
Attention
Attention selects what reaches awareness. Experimental work from binocular rivalry to the attentional blink finds attention necessary for conscious perception, in focused or diffuse form, although it does not suffice on its own (Cohen et al., 2012; Noah and Mangun, 2020).
If we are consciously aware only of what we attend to, our momentary being is influenced by everything that competes for that attention. An advertisement, a feed and a phishing message each make their claim. We are shaped by those demands.
The agent in a Duo reads each claim first, so the person decides what receives attention. KYOU aims to help us reclaim that attention. Each of us can then decide who and how we want to be.
The chart treats attention and awareness as two continua. Attention runs from diffuse to focussed and can be driven from within, by goals and expectations, or from outside, by salience and surprise. Awareness runs from non-conscious through sensing and knowing to self-aware, which is reflective (Marchetti, 2012). Each phenomenon occupies a region of this plane.
Damasio and Carvalho (2013) describe feelings as mental experiences of body states. They form part of life regulation, the process that keeps the body within the range compatible with life. A feeling of unease, urgency or comfort tells us how we are doing before we know why. Damasio and Damasio (2022) propose that a continuous flow of such homeostatic feelings is the source of consciousness. The valence of a feeling, pleasant or unpleasant, commands the attention of its owner (Damasio and Damasio, 2016). Advertising, phishing and a constant stream of notifications act on this route. They produce urgency, scarcity or social comparison, and the feeling arrives ahead of the content. A Duo at the boundary receives these stimuli first. It may hold back what has no bearing on the person and present the rest at a time and in a form the person can meet calmly.
Without KYOU, advertising, notifications and phishing messages all enter the plane and compete for attention.With KYOU, items 1 to 3 are read at the boundary and held back, and the Duo raises item 4 when it is useful. The plane keeps what the person chose.
Two questions asked of everything that arrives would return attention to the person. Is it relevant to this person now? Does it threaten them? The Duo answers both on the device, from what it has learned about its person, and acts before anything reaches awareness. The same two questions apply to every channel: advertising, email, messages and news.
Delivered at a time and in a form you can use. A colleague’s question, or the meeting in ten minutes.
A message that borrows your bank’s name is relevant because you have a bank. You see it once, labelled, with the reasons.
Most advertising, newsletters and feeds. Collected in a folder you can review, or never shown.
Scams, harassment and other harmful content stop at the boundary.
Knowing that the boundary holds may matter as much as the boundary itself. The stress response stays engaged while safety is uncertain (Brosschot et al., 2016), perceived control lowers stress reactivity (Miller, 1979), and silencing every notification raises anxiety and fear of missing out (Fitz et al., 2019). The Duo therefore shows what it held back and lets the person restore it.
Relevance comes from the person’s own learned profile. Threat is checked against credentials, independent reviews and prices. Neither needs a central list of what is good or bad for everyone, and both stay on the device. The registered studies test the relevance half. Whether the threat half lowers the load on attention and on felt homeostasis remains a hypothesis.
Why
Credentials already moved to the person. The model that learns from your behaviour sits with the platform. It may reveal far more about you than you realise, so the question is who holds it.
Personality judgements compared with self-report. Youyou et al., 2015. Earlier work on more than 58,000 volunteers showed that Likes alone predict sexual orientation, ethnicity, religious and political views and personality traits (Kosinski et al., 2013).
The Duo
A Cyber-Human Duo is a person and an AI agent that belong together. The person decides. The agent remembers, filters, drafts and acts inside the limits the person sets.
Matching and filtering run on your device. A relevance filter needs no outbound signal, so none is sent.
The Membrane sits between your memory and the outside. A Consent Layer shows you what would cross before it does.
Active Identity
The European Digital Identity Wallet puts verified credentials on your own device. It proves who you are and what you hold. Learning and acting lie outside its scope. Active Identity adds both, held where the wallet is held and under the same control.
They prove attributes on request and learn nothing about the person.
They learn from behaviour and act. The model belongs to the provider.
Both halves under one custody.
A credential is an attestation from a third party about a fixed attribute. An Active Identity also holds a continuously revised model of you, formed from what you read, choose, ignore, ask and do. No issuer can attest to that model, because the evidence exists only in your own history. Relationships take the form of links between Duos, each of which keeps its own counsel.
| Credential today | Active Identity | |
|---|---|---|
| What it does | Proves a fact when asked | Acts for you inside limits you set |
| Who holds it | The issuer or the platform | You, on your own device |
| Memory | Kept in each service you use | Kept by the Duo, shared case by case with your approval |
| Lifespan | One account or one employer | Paired with you for life |
| Health, fitness, reading, skills | Scattered across providers | One partitioned store that never has to leave your custody to be useful |
The boundary
The model your agent learns sits where you meet the world online. It senses what arrives and responds on your behalf. Filtering, protection and matching are three examples of what it does there. An interest inferred from your reading can inform an introduction, and a professional need can shape which news reaches you.
Platforms rank on your behalf, using a model they own and optimise for their own objectives. An Active Identity does the same job with a model optimised for you. Filtering runs in three directions.
An Active Identity reads a public profile as easily as any platform can. The score it returns is computed over the public profile together with what it has learned privately.
public profile alone
public profile + private context
The second contains the first. A filter holding both can always fall back on the public signal, so its information is at least as rich as that of a public-only filter and usually richer.
Much fraud depends on a request that looks plausible alone: an urgent bank message, a parcel fee, a voice that sounds like a relative in trouble. Your Duo knows which bank you use, whether a parcel is expected and how your relatives usually make contact.
A reply reveals something about the person who sends it. Four mitigations need no central authority.
Each announcement and response can carry a fresh single-use identifier, so no counterparty sees the same person twice unless you choose to reveal yourself.
Conventional networks ask you to declare a job title, a sector and a list of interests. Labels are coarse, date quickly and disclose a great deal to anyone who looks. In a network of Active Identities, a Duo with a need announces it in abstract form. Each receiving Duo evaluates it locally and answers only if the fit is strong.
The same arrangement serves a household looking for a plumber, a landscape gardener or an expert in digital forensics. The need goes out without a name or an address. The Duos of people who can help evaluate it and respond if they fit.
There is no directory to browse, no profile to rank and no category to join. Each added Duo brings private context against which every announcement is evaluated, so the network gains value with membership while nothing about any member is published.
The same arrangement covers advertising. Duos read an offer before it reaches any person and check its claims against credentials, independent reviews and prices. No click, impression or receipt goes back. The advertiser learns something only if you choose to act.
Exposure dial
Local models handle the work by default. Some tasks need a larger outside model. The dial sets what that model may see. Above zero you read the exact prompt first and can edit it or decline.
Nothing leaves the device. A local model does the work.
Example text for illustration.
The record
Every action lands on an append-only record, built on the Quipu pattern. You can extend the record. You cannot edit it. A correction becomes a new entry.
Example day for illustration. Midnight sits at the top, noon at the bottom.
Security
Keeping the model on your device removes the central store that one breach could empty. It makes the device the target. Theft, malware and loss are real risks for any device that holds a rich record of a person. KYOU is designed around them from the start.
The store is encrypted with a key held in the secure hardware of the device, where the device has it. A thief without your unlock gets ciphertext. The record is hash-chained, so an altered entry shows up when the chain is checked.
Malware that runs with your permissions can reach what you can reach. No design makes an infected device safe. The agent reads content through the membrane with an access level for each account. Sending needs your consent each time. Banking stays read-only.
You revoke a lost device from another device of yours, or with your recovery key. A revoked device stops receiving new data. Its local store is wiped the next time it connects.
At setup you receive a recovery key and keep it yourself, on paper or in a password manager. An encrypted backup can sit wherever you choose. KYOU holds no copy of the key. Without it nobody can restore your model, KYOU included. That is the cost of having no central copy.
Each device keeps its own record and syncs to your others in encrypted form, starting with your own cloud account on Apple devices. Keys pass between your devices when you pair them. They never go to a KYOU server.
The model can be deleted, sealed until a person you name proves access with your recovery key, or exported in parts you select. Inheritance law differs between countries, so you record the choice and the named contact while you are alive. The default is deletion.
These are design commitments for software under construction. No independent security review has taken place yet. I plan to publish a threat model and commission an external review before a public beta opens.
Compared
Several products now keep a memory of your work on your computer. Most still send that memory to a cloud model each time it is used. The table compares that common design with KYOU.
| Question | Typical AI memory tool | KYOU |
|---|---|---|
| Where the model of you runs | ✕ CloudA cloud model, for every request | ✓ DeviceOn your device |
| Who builds the profile | PartlyStored locally, generated by cloud processing and refreshed automatically | ✓ You and the DuoProfileGenesis on your device. Nothing is saved without your review |
| Data leaving the device | ✕ AlwaysOn every request and during background work | ✓ NoneNothing at dial 0 |
| Other people's names and details | ✕ SentNames and contact details travel with the context | ✓ KeptKept local. Redacted before anything leaves |
| What you see before data leaves | ✕ NothingNo review step | ✓ The promptThe exact prompt, which you can edit or decline |
| What other AI apps can read | ✕ EverythingThe whole memory, once connected | ✓ Approved onlyWhat you approve for that session, recorded on the cord |
| Encryption at rest | Operating systemRelies on disk encryption | ✓ App and hardwareStore encrypted with a key in secure hardware. Record hash-chained |
| Inbound mail, offers and news | ✕ UnfilteredNot addressed | ✓ FilteredRead at the membrane for relevance and threat |
| Advertising and news | ✕ UnchangedTargeting and tracking continue | ✓ Invisible marketplaceBroadcast once, scored privately, no receipts |
The typical column describes the common design of current AI memory products, drawn from their published privacy documents. The KYOU column states design commitments for software under construction.
In the world
In statistics, a Markov blanket is the set of variables that screens one part of a network from the rest (Pearl, 1988). Friston (2013) applied the term to living systems, where sensory and active states form the boundary through which an organism and its surroundings influence each other. The agent in a Duo plays that part for a person. Everything inbound is read at the boundary. Everything outbound leaves through it.
The Markov blanket is used here as an analogy for the architecture. Pearl defined it for graphical models, where a node's blanket consists of its parents, its children and its children's other parents. Kirchhoff et al. (2018) argue that the boundaries of living systems need not coincide with the body. Biehl et al. (2021) identify technical problems in the derivation of the free energy argument that Friston presented. A boundary reduces exposure and cannot guarantee every judgement, so filtered items stay in a folder you can review and correct.
The invisible marketplace
Platforms match supply to demand by holding a model of each person. A Duo reverses the arrangement. Each Duo holds the model of one person and uses it to judge what is relevant and what is a threat. An offer reaches every Duo, and each Duo decides in private whether its person ever sees it. I call the result the invisible marketplace.
The end of traditional advertising. Before a person sees an offer, the Duo checks each claim against credentials, independent reviews and prices. Urgency, social proof and targeting lose their value. Companies publish what is true about a product in a form a Duo can check, and a person sees only what passes.
The sender learns nothing.
A public offer such as an article, an advertisement or an event is broadcast once. Each Duo scores it on its own device for relevance and for threat. No score, receipt or read-receipt returns to the sender. A person who sees the offer may choose to act, and that starts a new message from the person, separate from the broadcast. A request that needs answers, such as a search for a reviewer, follows the Contract Net Protocol (Smith, 1980; Davis and Smith, 1983). The announcer broadcasts a task, a Duo may bid with a single number computed in the bidder, and the announcer awards the task. The animation shows the public offer.
The example follows one news article. An advertisement, a learning offer or an event would travel the same way. The figures are illustrative.
A platform that holds your profile sells access to it. Every view and click returns to the platform and the advertiser, which refines the profile.
Your Duo holds back most offers and blocks the ones that look like a threat. No view, click or receipt goes back. If a person chooses to act, that is a new message from the person.
Announcements travel through relays. A relay sees sealed messages and no profile. Anyone may run one. The first release would use a single relay that I operate, and the design allows several independent ones. A Duo that is offline receives an announcement on reconnecting, if it is still open. The Duo can ask a sender to prove who it is with credentials from the European Digital Identity Wallet before it scores anything.
A broadcast carries no name of its recipient. If you choose to act, your Duo sends a message from you and releases only what that needs. Reading an article needs nothing. Subscribing to a publication needs an address. Taking a role would need a name. You decide at each step.
Your Duo reads each announcement against your history and your standing rules. A topic you asked it to refuse, a sender that fails verification and a request that fits nothing you do are all held back. Held items stay in a folder you can review and correct.
Status. This is a design for software under construction. No relay exists yet and the exchange has not been tested at scale. The score is computed from data on your device, and a regulator may still treat the scoring as processing of personal data. The Contract Net Protocol is Smith's. Applying it to personal news and advertising is my proposal.
For senders
Publishers, civic bodies, employers and advertisers would reach people through the invisible marketplace once relays exist. The same rules apply to every sender.
An offer, article or notice goes once to every Duo through a relay. No list of recipients is needed, and none is formed.
A Duo may ask for credentials from the European Digital Identity Wallet before it scores anything. A sender that fails verification is held back.
Duos check claims against credentials, independent reviews and prices. Claims a Duo can verify are the claims most likely to reach a person.
No view, click or score returns. You learn something only when a person chooses to act. That act begins as a new message from them.
This describes a design. No relay exists yet. Prospective senders can write to info@kyou.io.
Evidence
Two Registered Reports will soon be pre-registered. The first tests a local-first membrane in place of a ranker. A ranker decides what you should see. A membrane runs on your device, answers only to you and keeps you invisible to everyone outside it.
How many judgements does a membrane need before it stops being a nuisance and starts being an asset?
How close does the membrane come to the person's own consistency, the highest standard any filter can fairly be held to?
A ranker can hide a failure on page two. A membrane rejects it outright. What does the membrane turn away?
Does conversational feedback in the person's own words improve the membrane, or add complexity without return?
Which signals carry the judgement of relevance, from simple keywords to learned meaning?
Does the membrane hold as the share of relevant items changes in a real stream?
The study runs with a university research partner. Its findings bear on whether a less intrusive means exists for personalising news and offers, a question data protection law asks of every profiling system.
The second Registered Report runs in a working support organisation, where incoming cases are matched to engineers. It tests whether a reputation that an engineer builds on their own device, and never transmits, predicts case outcomes better than the public signals alone. Case assignment carries on as it does today while the study observes.
Whether a score built on the engineer's own device predicts faster resolution than the public score for the same case.
How much evidence from closed cases a new engineer needs before the private profile adds to the public signals.
Whether the advantage grows as the engineer closes more cases, or fades as products and case mix change.
Better accuracy that concentrates work on fewer people counts as a failure. The study tracks how work would be spread from the start.
Participation is voluntary. Findings will be published when the study concludes.
Policy
The wallet is a natural host for an Active Identity. It is a certified application on the person's device, under the person's control, recognised across member states and capable of selective disclosure. The regulation lacks only the learning and the agency.
| Instrument | What it already supplies | What Active Identity adds |
|---|---|---|
| Regulation (EU) 2024/1183, European Digital Identity Wallet | Custody on the person's device. Selective disclosure. Wallet data kept logically separate from the provider's other data (Art. 5a(14)). Relying parties register what they will request (Art. 5b). | A learning layer inside the wallet that does not become a new store of profiles for its provider. It needs certification criteria for where the model runs and how the person corrects it. |
| GDPR (2016/679) | Defines profiling (Art. 4(4)). Right to object to profiling for direct marketing (Art. 21). Portability (Art. 20). | The profile is built where the traces originate, by a system that answers only to the person. What leaves carries no persistent identifier. |
| Digital Markets Act (Art. 6(9)) and Data Act (2023/2854) | Portability of generated data, including continuous real-time access, and access to data from connected products. | A destination the person controls that can put the data to work for them. |
| AI Act (2024/1689, Art. 50(1)) | People must be told when they deal with an AI system. | Each announcement can carry proof that it comes from an agent acting with a person's authority, without revealing who the person is. |
| Unfair Commercial Practices Directive (2005/29/EC) | Prohibits misleading claims. Enforcement mostly follows the fact. | A check before the claim reaches anyone. Honest claims that an agent can verify become the claims most likely to reach a person. |
Universal identity has meant universal recognition: one credential accepted across member states. An identity that learns and acts is universal in a second sense. It is present and useful in every setting the person enters, from the workplace to the library, the gym or home. The trajectory runs from identity that is held, to identity that is proven, to identity that acts and represents its client.
Research
It comes out of academic work on human and AI pairing, privacy architecture and labour law. The idea is published and open to challenge, and the general architecture is public so that anyone can build on it. Two Registered Reports test local against central matching, and both will soon be pre-registered. One is a shadow study in a working support organisation that matches customer issues to engineers. The other is a university study of a learning profile as a content relevance filter. Whether networks and teams form in practice is a prediction that these studies do not test.
The Cyber-Human Duo extended from the span of a job to the span of a life, with five properties, three uses and a policy analysis against the European Digital Identity framework.
A privacy-preserving pattern for worker-paired AI in knowledge-intensive organisations. The general specification, independent of any product.
Reclaiming attention sovereignty. A local-first gate tested against the user's own consistency. Run with a university research partner.
A prospective shadow study of assignment matching, testing a private score built on each engineer's own device against the public score.
Worker-paired AI memory and the recording paradox in Union law. The legal argument for a worker-controlled store.
SpecificationThe universal chat-based workflow architecture for agentic AI. One stream, append-only, readable by the person it belongs to.
Governance patternA governance pattern for consent-gated, validation-gated, attribution-preserving sharing of locally learned agent skills. A skill stays private to the human and agent pair. It spreads only after it passes an evidence gate and a consent gate, and it keeps the names of its contributors at every tier.
Talk and notesWhen the river runs dry: learning and critical thinking in an automated world. Consortium for Service Innovation Executive Symposium, September 2026.
Open questions
Who answers when an identity acts in a way its person did not anticipate, in a purchase, a refused request or an introduction?
Where does the boundary lie between a model of a person and that person's legal identity, when others use the model to make decisions about them?
How much must an announcement reveal to be evaluated, and no more? The balance may differ by domain.
Each of these can be studied with technology that exists today. Digital identity and personal agents have each advanced quickly, and the two can now be combined.
Principles
The agent proposes changes to your profile. You review them before they are saved.
Any server component is encrypted, headless and runs wherever its owner chooses. No mandatory third-party service.
Filtered items sit in a folder grouped by category. Restoring one is a correction the Duo learns from.
The core is Apache-2.0. Any workplace product is separate from KYOU.
The agent declines to help with extreme content on the device, and reports nothing to anyone.
Where data must leave the device, the limits are described in full.
Questions
An app that pairs you with one AI agent for life. The agent runs on your device, learns from what you do and acts for you within limits you set.
Not yet. The software is under construction and a public beta is in development. You can join the mailing list for news and beta invitations.
The Mac app comes first, then Windows and iPhone. Your devices share one encrypted record through your own cloud account.
No. KYOU reads the accounts you connect, such as your mail, through the membrane. Each account has its own access level.
Yes. The model, the profile and the filters run on the device, so they keep working without a connection. New mail and news arrive when you reconnect.
Only if you raise the exposure dial for a task. At zero, the default, nothing leaves. Above zero you read the exact prompt first and can edit or decline it.
They stay on your device. If a task needs an outside model, names and contact details are redacted first. You read the prompt before it is sent.
Any tool you choose, case by case. You see what would be shared with that tool for that session and approve it before it goes. Each disclosure is recorded on the cord.
You revoke it from another device or with your recovery key. Its local store is wiped the next time it connects. Security covers recovery in full.
The core is Apache-2.0. The general architecture is published so that anyone can build on it.
I am. KYOU is an independent research project, described under About.
Updates
Join the mailing list for news on the build, the studies and the public beta. Beta invitations go to this list first.
You receive one email asking you to confirm. Your address joins the list only after you confirm. You can also write to info@kyou.io with the subject "KYOU updates".
About
Co-founder · CTO
Builds the system
Researcher and systems architect working across generative AI, cognitive science and organisational behaviour. Over twenty years designing decision support systems, intelligent automation, AI and gamification, and leading organisational research in industry. Honorary Professor at Glasgow Caledonian University and Visiting Professor at Leeds Beckett University Business School.
Co-founder · Chief Strategy Officer
Builds trust and reach
Scholar of strategic communication and organisational behaviour. Director of Research and Knowledge Exchange at Leeds Business School, leading 150 academics. Former journalist and consultant.
Collaborators for over 15 years. Co-leads of the KYOU research programme. info@kyou.io