One button, always in the same place.
Writing, a photo and a voice note all start from the shutter at the bottom of the screen.
A moment you notice lasts a few seconds, so keeping it has to take less effort than letting it go. The shutter never moves, which turns capture into muscle memory, and the mode switcher above it changes what the button does without changing where it is.
Your words look like yours.
Your notes are set in a warm serif.
Everything around them stays quiet and native.
People's words should feel like a page from a notebook, and the controls should feel like part of the phone. Keeping the two apart means a memory never looks like a menu.
In New York, memory is a map.
The archive opens on the city. Tap a place and everything you noticed there rises in a sheet.
People recall a moment by where it happened before when (the corner by the laundromat, not March 3rd), so the archive follows that mental model. The sheet is the standard iOS pattern with corners concentric to the device, so it feels native rather than added on.
Twelve speaks with a dot.
Twelve groups what you keep noticing, like red doors or rain, into patterns.
Everything the model infers carries one blue dot and the words “Noticed by Twelve”. Clear attribution is what makes the AI trustworthy here: you always know which lines are yours and which are Twelve's.
Strangers, not followers.
The feed only shows moments from people you will never meet, chosen by what you notice.
We left out profiles, likes and counts, the mechanics that turn sharing into performance. With no audience to play to, people post what they actually saw.
Four ways two moments connect.
Echo, Convergence, Rhyme and Divergence. When a stranger's moment matches yours, Twelve names how.
Each kind is drawn as a subway line. Borrowing the city's own map language gives a new idea a shape people already read every day, so a parallel looks like a transfer between two lines.
The smallest reply there is.
You can't message a stranger. You can send one anonymous nod, and take it back.
A single, reversible gesture protects both people and keeps Twelve about noticing, not chatting. The nod takes the button's exact place, so the confirmation lands where your thumb already is.
Two minutes apart, in the same car.
One person noticed. The other was noticed. Neither will ever learn the other's name.
Divergence is the rarest kind of parallel, so the walkthrough ends on it, back on the L train where the film begins.
