# Post-Screen UI

DS269. Future / AI: Spatial. Page: https://ui.codeatlas.com.br/atlas/post-screen-ui/. Index: https://ui.codeatlas.com.br/llms/atlas.txt

Interaction concept that goes beyond a single traditional display.

- Status in 2026: Conceptual. An idea or proposal more than a practice.
- Trend 2027 to 2030: Uncertain (an editorial projection, not a forecast).
- The term: Known technical term or standard.

## Traits

- voice
- ambient
- spatial

Typical settings: Ubiquitous computing.

## When to use it, and when not

Consider it when the task and motivation match: people in instrumented environments. Typical settings: ubiquitous computing.

Be careful when the risk below would hurt the main task: speculative term with no defined solution.

Audience (a hypothesis about motivation and task, never measured, not a statement about any group): People in instrumented environments.

## UX risk and how to reduce it

- Risk: Speculative term with no defined solution.
- Mitigation and accessibility: Test each modality separately.
- How to check: Test with realistic scenarios: task success, accuracy, reversal, auditability, understanding of what the system does on its own, and a human's ability to step in.

## Evidence

Emerging: exploratory work, with no causal validation for this style.

The sources support the principles that apply to this term. None shows that this style works better or is preferred.

- [E13] Apple (2025). Spatial layout, Human Interface Guidelines. https://developer.apple.com/design/human-interface-guidelines/spatial-layout/ (Standard or guideline). Does not support: Layout for flat screens, or evidence of outcomes. It is device-specific platform guidance.
- [E16] Aljabri, Hijazi, Al-Salamin, Khemaja (2026). AI-MDD Approaches for Generating Adaptive and Intelligent UIs: A Systematic Literature Review. https://doi.org/10.20965/jaciii.2026.p1620 (Supported). Does not support: That adaptive generated UIs perform better for users. It maps the literature; the abstract read here does not report user outcomes.

## Limits

- The atlas is a broad, living catalogue, not every style that exists. No authority enumerates them, and the classes (movement, aesthetic, design system, layout, pattern, principle) overlap.
- The 1 to 5 scores are relative editorial judgements. They are not results of a study and not a measure of quality.
- An audience is a hypothesis about motivation, task and context. It was never measured and says nothing about any age, gender or other group.
- The sources support underlying principles (visual complexity, legibility, grouping, accessibility, platform conventions). None shows that a particular style works better or is preferred.
- The 2027 to 2030 trend is an editorial projection, not a forecast.
- Terms in the Future / AI category rest on exploratory work, some of it preprints, with no causal validation.

Last reviewed 2026-10-25.

## Heuristic scales

Relative editorial judgements from 1 to 5, not results of a study.

- Visual complexity: 3 / 5 (heuristic)
- Expressiveness: 3 / 5 (heuristic)
- Information density: 2 / 5 (heuristic)

## In our library

No design-style recipe implements this term yet; build it from `--ca-*` tokens.

## Prompt for your AI

```text
Design this interface in the "Post-Screen UI" direction (future / ai, spatial): Interaction concept that goes beyond a single traditional display.
Visual and interaction traits to use: voice, ambient, spatial.
Main UX risk: Speculative term with no defined solution. Mitigate it: Test each modality separately.
Keep it accessible to WCAG 2.2 AA: contrast, visible focus, keyboard operation, 24 px minimum targets, reflow at 320 CSS px and reduced motion.
Keep the content, hierarchy and behavior the same as a plain baseline so the two can be compared. Do not claim the style performs better; the choice should be validated with users.
```