Personal unblocking key

Rarity: Common

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At a glance

Class

Notion

Domain

Science and technology

In collections

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What Wikipedia says

A personal unblocking key (PUK), sometimes called personal unblocking code (PUC), is used in SIM cards and electronic devices such as security tokens to reset a personal identification number (PIN) that has been lost or forgotten.

Excerpt from the Wikipedia article “Personal unblocking key”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Raimond Spekking, CC BY-SA 4.0, via Wikimedia Commons.