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# Exploring Axisymmetric Shape-Change's Purposes and Allure for Ambient Display: 16 Potential Use Cases and a Two-Month Preliminary Study on Daily Notifications

Maxime Daniel, Guillaume Rivière

► To cite this version:

Maxime Daniel, Guillaume Rivière. Exploring Axisymmetric Shape-Change's Purposes and Allure for Ambient Display: 16 Potential Use Cases and a Two-Month Preliminary Study on Daily Notifications. 15th ACM International Conference on Tangible, Embedded and Embodied Interaction, Feb 2021, Salzburg, Austria., 2021. hal-03041113

HAL Id: hal-03041113

https://hal.science/hal-03041113

Submitted on 6 Jan 2021

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Maxime Daniel¹ and Guillaume Rivière²

¹Univ. Bordeaux, ESTIA INSTITUTE OF TECHNOLOGY, F-64210, Bidart, France

²Univ. Bordeaux, ESTIA INSTITUTE OF TECHNOLOGY, LaBRI, UMR 5800

## AXISYMMETRIC SHAPE-CHANGE FOR AMBIENT DISPLAY

CairnFORM [Daniel et al., TEI'19] is a shape-changing display designed as a stack of expandable illuminated rings: it enables axisymmetric shape-change (e.g., it can morph from a cylindrical shape to a conical shape).

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## POTENTIAL APPLICATION PURPOSES

We propose 16 new use cases for axisymmetric shape displays, for four purposes [Alexander et al., CHI'18].

### COMMUNICATE INFORMATION

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### SIMULATE OBJECTS

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### SYMBOLIC AND HEDONIC PURPOSES

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### ADAPTIVE AFFORDANCE

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« Brian is cooking and asks for a 10-minute timer. While he is waiting, he asks for his favorite music. »

## PRELIMINARY TWO-MONTH FIELD STUDY

<figure><img src="image_8.png" /><figcaption>Flat Display in office 1</figcaption></figure>

3 participants for two months

<figure><img src="image_9.png" /><figcaption>Both displays show a vertical histogram visualizing 10-hour forecasts of local renewable energy production</figcaption></figure>

### APPARATUS

<figure><img src="image_10.png" /><figcaption>Axisymmetric Shape Display in office 2</figcaption></figure>

3 participants for two months

### SHIFTING LAPTOP BATTERY CHARGE

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1

If battery level > 50% before a peak hour then unplug laptop

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2

If battery level < 50% before a peak hour then plug laptop without battery

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3

If peak hour then plug laptop

### RESULTS

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**Axisymmetric Shape Display** is as pragmatic as **Flat Display**

Both displays helped participants to charge laptop batteries more often and deeper during peak hours.

**Axisymmetric Shape Display** is more hedonic

than **Flat Display**

Participants stated that axisymmetric shape-change is still fascinating after two months.