Cairn — a place remembers your family's voice

Status: concept (2026-07-23). Separate brand; shares infrastructure with the SIGNAL AR-game concept (see /for-matt) and builds directly on Lovio + Living Voice. Not built. This doc is the spine.

The one line

You record a story and anchor it to a real place. Years or generations later, a descendant who's finally old enough to care where they came from travels there, puts on their glasses, and hears it — your voice, telling the story of that exact spot, standing where you stood.

Leave a stone. Leave a story.

The hero moment

A third-generation immigrant plans a roots trip to the old country. On arrival, their glasses surface the cairns their grandparents left, geo-fenced to the exact spots:

• "This is the dock where I left for America in 1949."
• "Our family farmed this valley for six generations. Stand here at dawn and you'll see why we never wanted to go."

Told in the ancestors' own cloned voices. The land starts talking to you in your family's voices. That is the product.

Why the name

A cairn is a stack of stones people add to across generations to mark a place, a path, or a memorial — travelers leave a stone; those who come after find the marker. It's cross-cultural (Highland cairns, Inuit inukshuk, trail markers, memorial cairns), it ties cleanly to the geocaching physical-marker lineage, and it carries the memorial/legacy weight the game layer can't. Each generation adds a stone; the marker grows.

Why separate branding (and why it still shares tech)

SIGNAL (the AR pursuit game) is adrenaline, competition, a crypto pot. Cairn is permanence, grief, ancestry, the sacred. Those tones repel each other — they cannot live under one name.

But they share one substrate: a persistent, geo-anchored, glasses-visible "cache" network. That is the strategic play — one piece of infrastructure, two emotionally opposite products. The game funds and battle-tests the tech; the legacy layer is the thing that actually matters.

It's mostly things already built

Cairn is a geo-trigger on top of existing systems, not greenfield:

• Lovio (docs neighbors; capsule pipeline is live at /dashboard/lovio) already does create → seal → deliver → unlock, time-locked, custody-outlives-owner, read-only-for-the-dead, family fan-out. Cairn is a Lovio capsule whose unlock condition is "a family member is physically here," instead of (or alongside) a date.
• Living Voice (LIVING_VOICE_ROADMAP.md) tells it in the ancestor's own cloned voice, under Consent v2.
• The family graph (family_members, linked accounts, invites — the Family Wall stack) already defines who inherits — the story descends the family tree.
• The glasses / AR layer (AR_GLASSES_LIVING_VOICE.md) does arrival-triggered playback.
• Legacy Channel / eldercare (LEGACY_CHANNEL_ELDERCARE.md) is the capture wedge: record the stories now, while the elder can.

Genealogy mechanics that compound

• Inheritance triggers. A story releases to descendants by age ("when she turns 18"), by arrival ("when you're standing here"), or by interest — unlocked when a descendant actually starts tracing the family line. "Once they become interested enough" becomes a real trigger.
• Add a stone. Each generation can layer their own story onto the same place, so a single coordinate accretes a family's voices across 100 years — the geocaching logbook turned into multi-generational oral history.
• Tree maps to places. Genealogy tracing already produces geography (ancestral towns, migration paths). Cairn overlays waiting stories onto that map — as you trace your lineage, some pins light up because kin left something there for you. Natural integration surface with Ancestry / FamilySearch / MyHeritage-style trees.

The NLU angle (Sophia / cicero.sh)

Not every cache is a command — a cairn can be talkable. You arrive and it asks who you are in the family before it opens: a gentle, local, voice-gated threshold ("I only open for blood"). A local NLU engine as the quiet gatekeeper of an inheritance — a warmer showcase than the game's movement commands, and it works standing in a dead zone where a cloud LLM can't reach.

Honest flags (the hard parts)

• Custody over decades. Who keeps a story alive for 50 years after you're gone? Lovio's custody-outlives-owner principle is the seed, but generational permanence is a real, unsolved question (endowment model? a trust? handoff to the family graph on death?).
• Consent & minors. Stories about real living people, geo-pinned to public places. Counsel-gated, same bright lines as the rest of the family/legacy work.
• Places change. Buildings fall, borders move. Anchor to coordinates, not the structure, so the story survives the place.
• Not a game, not wagered. Cairn never touches the SIGNAL pot mechanic. The shared thing is infrastructure, never tone.

Visual identity

Cairn borrows Emberkiln's firelit-craft palette (warm ember #df8f33 / #eaa652, deep burnt #a1581a, charred ground #381d0a, on dark) — a stacked cairn of stones glowing with an ember-light from within, at dusk over a homeland landscape. See the Midjourney prompt in the launch notes. The register is warm and permanent, the opposite of SIGNAL's cold cyan.

Open questions

• Standalone app, or a mode inside HiveJournal's existing legacy surfaces?
• Physical-marker option (an NFC/engraved stone at the real place) vs. pure AR?
• How does discovery work without spoiling — do you know a place has a cairn before you arrive, or is arrival the reveal?
• Genealogy-service integration: partner, or our own lightweight tree?