Voice Call Authentication
Securely authenticate users worldwide through automated voice calls to any phone number, featuring fully customizable verification messages.
Trusted by more than 150,000 companies globally, including 80% of the world's leading technology enterprises
Ensure user verification across all devices. When SMS and Flash Call aren't available, voice verification provides a reliable backup for delivering one-time passwords.
Tailor voice prompts to match regional preferences, cultural norms, and local languages.
Authenticate any phone number through an inclusive system that complies with Americans with Disability Act (ADA) requirements.
Through this verification method, users receive an automated call that delivers a voice code via text-to-speech technology. Users then input this code to authenticate and access the system.
The service also supports landline verification for users without mobile devices.
Authenticate users across all devices and platforms in their preferred language. Implementation is straightforward – no specialized security or telecommunications expertise needed!
Sinch enables you to customize voice prompts for each country, ensuring alignment with local customs and language preferences.
Enable secure platform access for users and staff through simple phone verification.
Enhance transaction security by implementing additional verification layers in your authentication process.
Streamline password recovery for an enhanced customer experience.
Our REST API makes Phone Call authentication integration straightforward. Here's how:
Our API automatically handles language selection for voice calls based on user preferences.
Receive instant verification confirmations through backend callbacks when users complete authentication.
Our inclusive verification method ensures accessibility for all users.
ISO27001-certified solution with GDPR compliance and secure cryptographic code handling.
Phone Call Verification offers the highest delivery success rate among verification methods. Users receive an automated call containing a verification code which they enter to complete authentication. This solution works with both mobile and landline numbers, making it the ideal option for users without mobile devices.
After initial payment, you can enable auto top-up via PayPal to automatically add credit when your balance falls below $1. Alternatively, manual top-up lets you add credit as needed without automatic payments.
Two-Factor Authentication (2FA) strengthens security by requiring two verification steps. A common approach uses a time-limited PIN sent to the user's phone. After initial authentication, users must enter this PIN to confirm their identity.
Enhance security and revenue with text-based authentication for login and registration.
Learn moreQuick and secure verification designed for optimal user experience.
Learn moreA quick and cost-effective alternative to standard SMS verification.
Learn moreSecure your platform and increase conversions now!
