---
title: "3DARCH-FT-20 — Follow coworker movement and activity in real time"
description: "Enable a participant to see current-floor coworkers' synchronized position, orientation, and movement/activity animation so that the shared environment feels live rather than static."
---

# Follow coworker movement and activity in real time

| Feature | Parent Epic | Delivery status | Status source | Owner | Approved for Solution |
|---|---|---|---|---|---|
| `3DARCH-FT-20` | [3DARCH-EP-4 — Experience Live Co-Presence](../../3darch-ep-4.md) | `IN_BACKLOG` | `EXACT` | 3D Architecture Wizzard team | No |

## Description

Enable a participant to see current-floor coworkers' synchronized position, orientation, and movement/activity animation so that the shared environment feels live rather than static.

## User or operator problem

Participants need remote movement and activity to feel live and remain associated with the correct coworker.

## Expected value

Makes co-presence legible through synchronized pose and activity rather than static avatars.

## Scope

Includes remote position, orientation, movement/activity animation, identity association, and local/remote distinction.

### Exclusions

- Communication content and seat-reservation ownership are excluded.

## Acceptance outcomes

- [ ] Movement updates remain associated with the correct recognized participant.
- [ ] Position and orientation changes update smoothly for floor peers.
- [ ] Supported animation/activity state follows the remote participant.
- [ ] Local and remote representations remain distinguishable.

## Dependencies

- [3DARCH-FT-14 — Move through a collision-aware 3D workplace](../../3darch-ep-3/features/3darch-ft-14.md)
- [3DARCH-FT-18 — See who shares the current floor](./3darch-ft-18.md)
- [3DARCH-FT-19 — Recognize coworkers by workplace identity](./3darch-ft-19.md)

## Risks

- Unvalidated pose and activity updates can create implausible or misleading remote movement.

## Human approval

Linas approved this Feature for documentation on 2026-09-02T10:40:43.220Z. It is **not Approved for Solution** and has no implementation approval.

- [Documentation decision](https://discord.com/channels/1518726359512387766/1543925247361814568/1544658325738885201)

## Delivery status evidence

The Feature was separately registered at `IN_BACKLOG` as an accepted catalogue boundary. This records backlog retention, not design or delivery progress.

- Event: Catalogue registration
- Actor and authority: Linas — Human project team member
- Reason: The Feature catalogue was accepted for governed documentation and retained in the backlog.
- [Status evidence](https://discord.com/channels/1518726359512387766/1543925247361814568/1544658325738885201)

## Architecture traceability

- Requirements: none derived.
- Readiness: Not started.

Architecture solution work must not begin until a separate human **Approved for Solution** decision is recorded.

## Tasks

[Review the Tasks group](./3darch-ft-20/tasks.md). No canonical implementation Tasks have been defined.

## Original source

- [Discord – Scope – Linas: original Feature request](https://discord.com/channels/1518726359512387766/1543925247361814568/1544647879111483562)
- [Discord – Scope – Linas: proceed with documented mapping](https://discord.com/channels/1518726359512387766/1543925247361814568/1544658325738885201)

### Legacy implementation evidence

The Feature boundary was mined from legacy revision `c0ced47ecaf4426f47e5c2e4868677f7144b951a`.

- [`apps/nebula/src/components/Player.tsx`](https://gitea.lego-cloud.eu/corp-v1-3darch-legacy/corp-v1-3darch-legacy/src/commit/c0ced47ecaf4426f47e5c2e4868677f7144b951a/apps/nebula/src/components/Player.tsx)
- [`apps/nebula/src/hooks/usePlayerAnimations.ts`](https://gitea.lego-cloud.eu/corp-v1-3darch-legacy/corp-v1-3darch-legacy/src/commit/c0ced47ecaf4426f47e5c2e4868677f7144b951a/apps/nebula/src/hooks/usePlayerAnimations.ts)
- [`apps/nebula/src/hooks/usePlayerMovement.ts`](https://gitea.lego-cloud.eu/corp-v1-3darch-legacy/corp-v1-3darch-legacy/src/commit/c0ced47ecaf4426f47e5c2e4868677f7144b951a/apps/nebula/src/hooks/usePlayerMovement.ts)
- [`packages/utils/types/src/player.types.ts`](https://gitea.lego-cloud.eu/corp-v1-3darch-legacy/corp-v1-3darch-legacy/src/commit/c0ced47ecaf4426f47e5c2e4868677f7144b951a/packages/utils/types/src/player.types.ts)