India Driver's License Number

Detects India 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

Not detected

Jurisdictions

in

Regulations

DPDPA

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{2}\s?\d{4}\d{7}\b

Corroborative evidence keywords

driver, licence, license, driving, DL, ID number, identification, ID card, permit, registration, certificate, field, column, row, entry, record, value, form, register, database (+20 more)

Proximity: 300 characters

Should match

• MH1220100123456 — Maharashtra state driver's license format without space
• KA02 20190007654 — Karnataka state format with space after state code digits
• DL0520180001234 — Delhi state driver's license format

Should not match

• M12020100123456 — Only 1 letter instead of required 2
• MH122010012345 — Too few trailing digits
• 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

• India driver's license number entity definition - Microsoft Learn