Hungary Driver's License Number

Detects Hungary driver's license number patterns. This pattern is based on a Microsoft Purview built-in sensitive information type. Users already running Purview may prefer to enable the built-in SIT directly, or use this version as a starting point for customisation.

Type: regex
Engine: universal
Confidence: medium
Confidence justification: Medium confidence: pattern has structural constraints but corroborative keywords are recommended to reduce false positive rates. Added context gating and exclusion rules improve precision and reduce incidental matches.
Detection quality: Verified
Jurisdictions: hu, eu
Regulations: BDSG, CNIL / LIL, GDPR
Frameworks: ISO 27001, ISO 27701
Data categories: pii, government-id
Scope: narrow
Risk rating: 6
Platform compatibility: Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Compatible, Netskope: Compatible

Pattern

\b[A-Z]{2}\d{6}\b

Corroborative evidence keywords

driver, licence, license, driving, DL, ID number, identification, ID card, permit, registration, certificate, data record, database record, record set, data extract, data export, database table, spreadsheet, data registry, registry entry (+14 more)

Proximity: 300 characters

Should match

AB123456 — Standard Hungarian driver's license with 2 letters and 6 digits
XY987654 — Another valid format with different letter prefix
HU000123 — Valid format with leading zeros in digit portion

Should not match

A1234567 — Only 1 letter instead of required 2
ABC12345 — 3 letters instead of required 2
template example placeholder record identifier — Template/sample context should be excluded even when anchor words are present

Known false positives

Generic numeric sequences matching the driver's license format appearing in unrelated contexts. Mitigation: Require corroborative evidence keywords within the proximity window to confirm driver's license context.

References

Hungary driver's license number entity definition - Microsoft Learn