# passkey

/ˈpæski/ (US) · /pˈɑːski/ (UK) · CEFR B2 · Noun

Source: https://englishreference.com/word/passkey
Updated: 2026-10-17

## Definition

a special key or code that opens many different locks or gives you access to a private system. You use it to get into places or accounts that are usually protected.

For teachers: a master key or digital credential that grants access to multiple locks or restricted electronic systems. In modern computing, it refers to a secure authentication method that replaces traditional passwords.

## Examples

- The hotel manager uses a passkey to open every room.
- After setting up a passkey on his phone, he could log into his bank account using only his fingerprint.
- Security experts recommend transitioning from traditional passwords to passkeys, as they leverage public-key cryptography to provide significantly stronger protection against phishing attacks.

## Synonyms

password, code

## Usage notes

- Often used in both physical security and modern cybersecurity contexts.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.