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Mobile phone verification

Verify age
with a mobile number.

Check age during signup or checkout using a customer’s mobile number. Confirm phone ownership by SMS, then match against age records.

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Verify during signup

Customers confirm their number with a code. A separate record check determines whether they meet your age requirement.

Account signup
Create your account
Full nameJordan Avery
Email addressjordan@example.com
Password••••••••••
Mobile number+1 (202) 555-0148
✓ Account created
Verify your age18+

Confirm your phone

Code sent to ••• ••• 0148.

123456
Phone ownershipConfirmed with the SMS code
Age-record check18+ requirement met
Age confirmed · access can openThe account meets the 18+ requirement.

U.S. phone records. Coverage varies.

Keep the result with the account

Save the phone and age results against the user’s account. Unlock restricted access only when the age requirement is met.

Check U.S. phone records

Phone-based age lookup supports U.S.-issued numbers. An SMS code confirms phone ownership, not age.

U.S. coverage and hit rate

Expected U.S. record hit rate: over 85%. Check age against your required threshold, with another method available when needed.

Phone-based age lookup

U.S. phone numbers

>85%Expected U.S. record hit rate

Estimate; varies by audience and record availability. A record hit is not an age approval.

SMS confirmationPhone ownership
Age lookupSeparate record check
A confirmed phone may have no usable age record. Offer another method when needed.
Coverage and requirements →
Built for online age verification
“Robust API library. Multiple configuration options. Turn key integration. Responsive and smart customer support.”
Titania S. · CEOAdult entertainment industrySourceForge · June 1, 2023
4.9 / 5SourceForge

Review of BlueCheck’s service; not a phone hit-rate claim.

Measure coverage with your own audience

The expected record hit rate is not an approval rate. A matched record still needs to meet your age requirement.

Keep a fallback available

When a record cannot establish age, offer another supported method. A record hit still needs to meet your age requirement.

When another check is needed

If the phone record cannot establish age, offer an SSN or Photo ID check.

Additional verificationExample · U.S. account
1
Phone lookup

No age record found. Access stays locked.

2
Another method offered
Last four SSN digitsSelected · U.S. customers
Photo ID + selfieAnother available method
✓
Age confirmed

18+ requirement met. Access can open.

Verify your age18+

Age-record check

Name, date of birth, and last four SSN digits.

Full nameJordan Avery
Date of birthApril 18, 1992
Last four SSN digits
1234
Age confirmed

Your account meets the 18+ requirement.

Illustrative flow. Available methods depend on eligibility and your settings.

Use SSN details or Photo ID

For U.S. customers, check name, date of birth, and the last four SSN digits. Photo ID uses an ID image and a selfie holding the document.

Hold access until age is confirmed

A missing record does not mean someone is underage. Keep the order or account restricted until verification is complete.

Questions

Does an SMS code prove age?

No. The code confirms access to the phone. A separate record check determines whether the age requirement is met.

Which phone numbers support age lookup?

The documented phone-age service supports U.S.-issued numbers. SMS delivery coverage and age-record coverage are different. See the requirements.

What happens if no age record is found?

Offer a supported alternative such as last-four SSN or Photo ID. Keep the order or account restricted until age is confirmed.

How do we add this to our website?

Use your supported commerce integration or connect the API to your signup flow. Available methods depend on your configuration.

Get started

Add phone age verification to your website.

Contact Us