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Rule "missing hyphen in 'two factor auth'"

This is one of many errors that LanguageTool can detect. Visit the LanguageTool homepage to use it online or download it for free.

Description: missing hyphen in 'two factor auth'
Message: When '\1-\2' is used as a modifier, it is usually spelled with a hyphen.
Category: Grammar (ID: GRAMMAR)
Link: https://languagetool.org/insights/post/hyphen/#compound-nouns-with-and-without-hyphens
Incorrect sentences
that this rule can detect:
  • He enabled 2 factor auth to protect his Facebook account.
    Correction suggestion: 2-factor
Pattern: Show XML · Show in Rule Editor
Check the following text against just this rule:

ID: FACTOR_HYPHEN [1]
Version: 6.5-SNAPSHOT (2024-06-14 22:33:10 +0200)