PIN
PIN
/pɪn/
An acronym for Personal Identification Number, a secret numerical code used to authenticate a user to a system.
Always refers to a numerical code, typically 4-6 digits, used for security with bank cards, phones, or other accounts.
The story behind the word. PIN is an acronym that stands for 'Personal Identification Number'. It emerged in the 1960s with the advent of automated teller machines (ATMs) and electronic banking, providing a simple, memorable, and secure way for individuals to verify their identity for financial transactions.
Word relationships
- password: Broader, can include letters, symbols; 'PIN' is specifically numerical.
- passcode: Similar to password, but often implies a shorter, sometimes numerical, code for devices.
Commonly confused with
- password: A 'PIN' is always numerical; a 'password' can be alphanumeric and include special characters.
Collocations
- enter PIN
- PIN number (redundant but common)
- reset PIN
- PIN code
Example sentences
- "She entered her four-digit PIN to withdraw cash from the ATM." Using an ATM.
- "For security, you'll need to enter your PIN on the card reader." Paying at a store.
- "Remember to choose a strong and memorable PIN for your new smartphone." Setting up a new device.
Memory hook
Remember Personal Identification Number – it's your Private Information Number. Personal ID Number
When not to use
Do not use 'PIN' to refer to any password; it specifically means a numerical code.
Fun facts
- The original inventor of the ATM, John Shepherd-Barron, wanted a six-digit PIN, but his wife found it too hard to remember, so he shortened it to four digits, which became the global standard.
Related words
Explore more words
Code, authentication, credential, passphrase, biometric, mnemonic
Take your vocabulary further with LangBlitz
Our English vocabulary app: FSRS spaced repetition, 5,000+ curated words across 119 topic groups, CEFR A1 to C2. Explore your mastery with the beautiful Vocabulary World feature.