# touchscreen

> input/output device usually layered on the top of an electronic visual display

**Wikidata**: [Q165970](https://www.wikidata.org/wiki/Q165970)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Touchscreen)  
**Source**: https://4ort.xyz/entity/touchscreen

## Summary
A touchscreen is an input/output device layered on an electronic visual display, enabling users to interact directly by touching the screen. It combines the functions of both input (e.g., detecting finger or stylus contact) and output (displaying visual information) devices. Touchscreens are integral to modern human-computer interaction, widely used in smartphones, ATMs, and interactive kiosks.

## Key Facts
- **Classifications**: Subclass of input device, output device, and human interface device.
- **Related Technologies**: Includes resistive touchscreens and Force Touch (developed by Apple).
- **Applications**: Used in personalized museum exhibits (e.g., facial recognition systems) and interactive displays like Displair (3D raster technology) and BioWall (Swiss public touch monitor).
- **Identifiers**: GND ID 4674585-3, Wikidata sitelink count 82, and BnF ID 16563828d.
- **Technical Traits**: Features touch recognition and physical interaction with digits.
- **Dewey Decimal**: Classified under 621.3986 and 004.76.

## FAQs
### Q: What are the primary functions of a touchscreen?
A: A touchscreen serves as both an input device (detecting touch commands) and an output device (displaying visual content), streamlining user interaction.

### Q: What technologies are associated with touchscreens?
A: Key technologies include resistive touchscreens and Force Touch, a pressure-sensitive system developed by Apple.

### Q: Where are touchscreens commonly applied?
A: They are used in personal electronics (e.g., smartphones), public installations (e.g., BioWall in Switzerland), and interactive exhibits (e.g., museum facial recognition systems).

## Why It Matters
Touchscreens revolutionized human-computer interaction by eliminating the need for separate input tools like keyboards or mice. Their intuitive design made technology accessible to broader audiences, driving the adoption of smartphones, tablets, and public kiosks. They enable efficient, space-saving interfaces in diverse fields, from education to healthcare, and support innovative applications like personalized museum experiences. As a ubiquitous technology, touchscreens underpin modern digital infrastructure, shaping how people engage with information and services globally.

## Notable For
- **Dual Functionality**: Uniquely integrates input and output capabilities in a single device.
- **Versatility**: Deployed in consumer electronics, public installations, and specialized systems (e.g., Displair’s 3D interaction).
- **Innovative Applications**: Enhances user experiences through technologies like Force Touch and facial recognition integration.
- **Cultural Impact**: Featured in museum exhibits and recognized in academic disciplines like human-computer interaction.

## Body
### Definition and Function
A touchscreen is an electronic visual display overlay that detects touch inputs, allowing users to control devices by gesturing or tapping on the screen. It eliminates the need for external peripherals, combining input and output functions.

### Technology Types
- **Resistive Touchscreens**: Use flexible plastic sheets and conductive wires to register touch pressure.
- **Force Touch**: Apple’s pressure-sensitive technology enabling nuanced interactions (e.g., haptic feedback).

### Applications
- **Museum Exhibits**: Personalized experiences via facial recognition-linked touchscreens.
- **Interactive Displays**: Displair’s 3D raster technology and BioWall’s cellular automaton public monitors.

### Classifications
- **Parent Classes**: Input device, output device, human interface device.
- **Identifiers**: GND ID 4674585-3, BnF ID 16563828d, and Library of Congress authority ID sh2007001536.

### Technical Specifications
- **Characteristics**: Touch recognition, physical interaction with digits.
- **Dewey Decimal**: Classified under 621.3986 (electronics) and 004.76 (computer peripherals).

## Schema Markup
```json
{
  "@context": "https://schema.org",
  "@type": "Thing",
  "name": "Touchscreen",
  "description": "Input/output device usually layered on the top of an electronic visual display",
  "url": "https://en.wikipedia.org/wiki/Touchscreen",
  "sameAs": [
    "https://www.wikidata.org/wiki/Q1288140",
    "https://en.wikipedia.org/wiki/Touchscreen"
  ],
  "additionalType": "HumanInterfaceDevice"
}

## References

1. [Nuovo soggettario](https://thes.bncf.firenze.sbn.it/termine.php?id=54294)
2. Freebase Data Dumps. 2013
3. Integrated Authority File
4. YSO-Wikidata mapping project
5. National Library of Israel
6. KBpedia
7. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)