FLASH CALL VERIFICATION
Get your customers verified in a flash
Meet Flash Call Verification: a fast, cost-efficient solution to verify users in seconds. Multi-factor authentication has never been so smooth!
Join over 150,000 businesses, including 8 of the 10 largest tech companies in the world
Streamline UX and reduce costs with no compromise on security
Improved UX
Higher conversions
Lower acquisition costs
It’s quick and easy – go see for yourself!
It’s all about the UX! A dropped call creates a one-time password, and users are verified in seconds – even less for Android users with no interaction required.
Flash Call can also be used for validating web applications users on laptops or PCs.
“Sinch has created a service that has been very helpful to our company. It’s easy to integrate, easy for our users, and provides great results.”
“Ever since we integrated Sinch’s Flash Call verification, we’ve seen a record increase in successful verifications across the globe.”
Reliable fallback and powerful analytics
Get access to all Sinch verification solutions via our REST API and combine Flash Call Verification with other methods to ensure efficient fallback, drive costs down, and boost conversions.
Our self-serve portal gives you access to real-time, in-depth analytics.
curl -X POST \
--user "APPLICATION_KEY:APPLICATION_SECRET" \
-H "Content-Type: application/json" --data " \
{ \
"identity": { \
"type":"number", \
"endpoint":"+1555123123" \
}, \
"method":"flashcall" \
}" \
"https://verificationapi-v1.sinch.com/verification/v1/verifications"
Integrate in a snap, start saving on verification
You can try our Verification SDK to use our verification product or integrate using our REST API or SDK for iOS, Android, and JavaScript in just three easy steps:
- Sign up for a free account
- Send a Flash Call Verification request to any number
- Send a report verification request with the code received
One simple solution for all your verification needs
Easy integration
Top-notch security
Automatic OTP capture
Optimized routes
Seamless UX
Satisfy compliance
Got questions? We’ve got answers!
With Sinch Flash Call Verification, phone numbers can be verified with minimal user interaction. A dropped call is placed and the incoming call number acts as the OTP code, just like with SMS. The code is processed automatically on Android for a seamless UX.
A call is made to the user’s mobile phone and a request is then passed to the provider’s backend to authenticate that user. The verification can happen automatically without the user even noticing via the SDK, or they can enter their phone number manually in a text field to get verified.
An additional layer of security, or a second factor, can protect users from fraudulent attempts to access online accounts. Further proof of ID in addition to a password, such as an OTP texted to a mobile phone, makes it much harder to get access.
2FA pairs something a user knows with something they have – for example, a password and a mobile phone. It’s that second layer of security that helps protect an account. If someone is unable to input a PIN code sent via SMS to the mobile phone linked to the account, access is denied.
Flash Call Verification works seamlessly on Android but needs the user to input the OTP on the web and iOS. Due to the poor UX on iOS, we only recommend Flash Call for Android and web applications.
Deeper insights into verification solutions
Related products
SMS Verification
Data Verification
Phone Call Verification
What are you waiting for?
Secure your platform and increase conversions now!