Updated: 05/01/2023 by Computer Hope

PIN may refer to any of the following:

1. Short for personal identification number, a PIN is a set of unique numbers used to prove a person's identity or for other authentication purposes. For instance, PINs are used with automated bank teller machines, telephone calling cards, and Wireless networks. Below is an example of Microsoft Windows asking for a PIN when connecting to a Wi-Fi network.

Network PIN


If you are trying to access your wireless network and don't know a PIN, select the option to use your network key or passphrase.

Pin to taskbar

2. With Microsoft Windows, Pin is a term introduced with Windows 7 that describes placing a shortcut on the Taskbar or Start menu.

How to pin

Pinning a shortcut to the Taskbar or Start lets you quickly access programs you use often.

To pin a shortcut to the Taskbar or Start:

  1. Open the program.
  2. Right-click the program icon in the Taskbar.
  3. Select Pin to Taskbar or Pin to Start.

You can also drag the icon to the Taskbar until it looks like the picture.

With the introduction of Windows 8, pin is expanded to mean any object in a UI (user interface). For example, in Windows 8, you can also pin tiles. Windows 8 also introduced a PIN login, allowing users to log into their computer using a four-digit PIN.


The location where programs or objects are pinned in Windows is sometimes called the pinned area.

How to remove a pin

To unpin any pinned icon, right-click the icon and choose the unpin option. For example, you can right-click a pinned icon on the taskbar and click Unpin from taskbar.

3. With ChromeOS and Chromebooks, pinning describes adding an app icon permanently to the shelf.

4. On the social networking platform Pinterest, a pin is a saved picture or website you enjoyed that's saved to your Pinterest profile. Once pinned, others can view all your saved pins, make comments, or pin anything they like to their profile.

VGA connector and VGA port.

5. A pin also describes the short and usually thin piece of metal found on the end of a male cable. For example, the picture shows the end of a VGA (video graphics array) connector with pins (top image) that connects to the female connector (bottom image) on the computer.

6. The term pin describes the small metal extrusions on the bottom of a CPU (central processing unit) or IC (integrated chip). These pins connect the CPU to a socket or circuit board. Pictured is a close-up of a CPU, showing how pins on the CPU may become bent. If the pins are bent, the CPU may not function.

Computer CPU with bent pins

7. In an Internet browser, such as Chrome and Firefox, a pin refers to making a tab smaller and permanent on a browser tab bar. Mozilla Firefox refers to these as App tabs. The picture below shows an example of four pinned tabs in Firefox. When a tab is pinned, you'll only see the favicon.

Mozilla Firefox App Tab

Access number, Authentication, Computer acronyms, Hardware terms, Male connector, Password, Phone terms, Pin-compatible, Security terms, Software terms