idcheckVerify Montana driver's licenses
Capture a Montana license front and back and idcheck.now decodes the AAMVA PDF417 barcode, validates the 13 digits, 9 digits, or 1 letter + 8 digits license number, and cross-checks every encoded field against the printed card.
Every layer we run on a Montana license
These checks run on every Montana verification — no per-feature upsell on the core flow.
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AAMVA PDF417 decode
Full CDS v01–v12 parse of the Montana barcode — decoded live in the browser and again independently server-side. Any mismatch is a tamper signal.
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Mandatory-field enforcement
DCS, DAC, DBB, DBA, DAQ, and address elements must be present and well-formed per the AAMVA CDS.
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License-number format validation
The barcode's DAQ license number is validated against the Montana pattern: 13 digits, 9 digits, or 1 letter + 8 digits.
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Barcode ↔ OCR cross-check
Encoded fields are compared against the printed visual zone — name, DOB, expiry, and license number must agree.
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Expiry & age validation
DBA (expiration) is enforced against the validity window; DBB (birth date) drives per-session age thresholds.
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Issuing-authority IIN check
The issuer identification number in the barcode header is checked against Montana's AAMVA issuer record.
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DMV verification (DLDV add-on)
Montana participates in AAMVA DLDV — a live check of license number, name, and DOB against the state DMV record, enableable as an add-on.
The Montana license-number format
13 digits, 9 digits, or 1 letter + 8 digitsThe barcode's DAQ element carries the license number. idcheck.now validates it against the published Montana pattern as a plausibility signal — formats drift over time and legacy cards remain in circulation, so a format miss is a warning fed into the composite score, not an automatic decline.
What the Montana PDF417 barcode tells us
A sample of the AAMVA CDS elements decoded from every Montana barcode, and what each one feeds into.
| Element | Meaning | How idcheck.now uses it |
|---|---|---|
DAQ |
Customer ID / license number | The license number itself — validated against the state format and, for FL/IL/WI/MO, recomputed from the holder's identity. |
DCS |
Customer family name | Mandatory. Soundex-encoded into the license number in FL/IL/WI; cross-checked against the printed card everywhere. |
DAC |
Customer first name | Mandatory. Mapped to a first-name code (Gallian table) inside FL/IL/WI license numbers. |
DBB |
Date of birth | Mandatory. Encoded into the FL/IL/WI day-code segment and the Missouri trailing digits; drives age checks. |
DBA |
Document expiration date | Mandatory. Enforced against the document validity window on every verification. |
AAMVA DLDV for Montana
Montana participates in AAMVA's DLDV program. As an add-on, idcheck.now can submit the license number, name, and date of birth to the Montana DMV through DLDV and return the state's own verdict — the strongest confirmation short of an in-person check.
Most US jurisdictions participate in DLDV; participant lists and response fields change over time. Confirm availability for Montana at integration time.
FAQ
Montana verification questions
What format is a Montana driver's license number?
Montana driver's license numbers are 13 digits, 9 digits, or 1 letter + 8 digits. idcheck.now validates the barcode's DAQ field against this pattern on every verification; older card layouts still in circulation are handled as plausibility warnings rather than hard failures.
Can idcheck.now verify a Montana license directly with the DMV?
Yes — Montana participates in AAMVA's DLDV (Driver's License Data Verification) program, and a live DMV check is available as an add-on on any paid tier. DLDV confirms the license number, name, and date of birth against the state record. Participation lists change, so confirm availability at integration time.
Verify Montana licenses in your onboarding flow today.
Your first 100 verifications are free. No credit card — five lines of JavaScript.