# keypad

> small, rectangular keyboard supporting a limited set of symbols

**Wikidata**: [Q2009740](https://www.wikidata.org/wiki/Q2009740)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Keypad)  
**Source**: https://4ort.xyz/entity/keypad

## Summary
A keypad is a small, rectangular keyboard that supports a limited set of symbols, functioning as an input device. It is commonly used for specific tasks such as access control and dialling. Keypads are distinct from full keyboards due to their specialized, compact design.

## Key Facts
*   A keypad is classified as an input device and a type of keyboard.
*   It is described as a small, rectangular keyboard supporting a limited set of symbols.
*   Keypads are used for access control, particularly with electronic locks and PIN pads.
*   They are also utilized for dialling on telephones.
*   Specific types include numeric keypads, gaming keypads, PIN pads, and telephone keypads.
*   The Logitech MX Creative Keypad is an example of a keypad component.
*   Keypads are distinct from a one-time pad.
*   Common aliases for keypad include "key pad," "dial pad," and "dialpad."

## FAQs
### Q: What is a keypad?
A: A keypad is a compact, rectangular keyboard designed to support a limited set of symbols. It serves as an input device, enabling users to enter data or commands efficiently.

### Q: What are keypads primarily used for?
A: Keypads are primarily used for access control, such as with electronic locks and PIN pads, to restrict access to resources. They are also essential for dialling on telephones.

### Q: What are some common types of keypads?
A: Common types of keypads include numeric keypads (often found as a section of a computer keyboard), gaming keypads, PIN pads for financial transactions, and telephone keypads found on "Touch Tone" telephones.

## Why It Matters
Keypads are fundamental input devices that streamline interaction with a wide array of systems by offering a focused and efficient method of data entry. Their compact and specialized nature allows for precise input of numbers or specific commands, making them indispensable in scenarios where a full keyboard would be cumbersome or unnecessary. Keypads play a critical role in security, enabling secure access control for physical locations and digital resources through electronic locks and PIN pads, thereby safeguarding assets and information. In communication, they are vital for facilitating dialling on telephones, connecting individuals across distances. By simplifying user interfaces and enhancing security measures, keypads have become integral components in everything from personal devices to public infrastructure, significantly impacting daily operations and personal safety. Their ability to provide direct and intuitive input for specific functions underscores their importance in modern technology.

## Notable For
*   Being a specialized input device, distinct from a full keyboard due to its limited set of symbols and compact form factor.
*   Its widespread application in access control systems, including electronic locks and PIN pads, for security purposes.
*   Its essential function in telecommunications, specifically for dialling on "Touch Tone" telephones.
*   Having various specialized types, such as numeric keypads, gaming keypads, and PIN pads, tailored for distinct applications.

## Body

### Definition and Classification
A keypad is defined as a small, rectangular keyboard that supports a limited set of symbols. It is classified as an input device and a type of keyboard. Furthermore, it is considered a type of computer keyboard.

### Applications and Uses
Keypads serve multiple practical applications:
*   **Access Control:** They are used for access control, specifically applying to electronic locks and PIN pads, to manage and restrict entry.
*   **Dialling:** Keypads are utilized for dialling functions, particularly on telephones.

### Types and Examples
Several specialized types of keypads exist:
*   **Numeric keypad:** This is a section typically found on a computer keyboard, primarily for numerical input.
*   **Gaming keypad:** A specific type of peripheral designed for gaming.
*   **PIN pad:** A keypad specifically purposed for financial transactions, often used for entering Personal Identification Numbers.
*   **Telephone keypad:** This type of keypad appears on "Touch Tone" telephones for dialling.
A specific instance of a keypad is the Logitech MX Creative Keypad, which functions as a component of an input device manufactured by Logitech.

### Distinctions
A keypad is explicitly stated to be different from a one-time pad, which is a cryptographic technique.

### Aliases
The entity "keypad" is also known by several aliases, including:
*   key pad
*   dial pad
*   dialpad
*   teclado numérico
*   小鍵盤
*   клавиатура

### Digital Presence and Identifiers
The keypad entity has a notable digital footprint:
*   **Wikipedia:** It is associated with the Wikipedia title "Keypad" and is available in multiple languages including Arabic, English, Spanish, Persian, Indonesian, Japanese, Korean, Dutch, and Tamil.
*   **Wikimedia Commons:** An image example is available at `https://commons.wikimedia.org/wiki/Special:FilePath/Telephone_keypad_20080726.jpg`, and it has a Commons category named "Keypads."
*   **Freebase ID:** It has a Freebase ID of `/m/07gngb`, with a reference publication date of 2013-10-28.
*   **Stack Exchange:** A relevant Stack Exchange tag is `https://stackoverflow.com/tags/keypad`.
*   **Other Identifiers:** It has a MobyGames attribute ID of 331 and a discontinued Microsoft Academic ID of 2780140372.
*   **Sitelink Count:** The entity has a sitelink count of 12 across various platforms.

```json
{
  "@context": "https://schema.org",
  "@type": "Thing",
  "name": "Keypad",
  "description": "A small, rectangular keyboard supporting a limited set of symbols.",
  "sameAs": [
    "https://en.wikipedia.org/wiki/Keypad",
    "https://stackoverflow.com/tags/keypad",
    "https://www.freebase.com/m/07gngb"
  ],
  "additionalType": [
    "input device",
    "keyboard"
  ]
}

## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)