AUTHENTICATION API

Boost and protect traditional username and password login for websites, SaaS products, and mobile apps. Everything is made easy for users, developers, and businesses.
Enable Verification ANYTIME, ANYWHERE,
and on ANY USER
Easy Plug and Play with FONE API:

Allow the integration of our API or SDK into your app and let our services do the rest. Explore how we consistently deliver one of the highest verification rates in the industry.

  • LESS CODES, EASIER TO UNDERSTAND

    Phone verification must be easier to understand so more people are willing to use it. Just give us a number and we’ll do everything for you - code generation, localize, finding and using the fastest channel, fall back if and when needed.

  • NEVER SETTLE FOR MEDIOCRITY

    We have fast delivery, an intelligent failover feature, and we select the optimal channel for reaching out to your customers. Our services complies with the changing carrier and country regulations so all of the messages don't get filtered out.

  • PAY FOR YOUR CAMPAIGN SUCCESS

    Failure will cost many resources, including time and money. But with FONE API, only pay if the verification is successful. It works on a flat fee basis, regardless of where your customers are located, and you can monitor all of the costs in real time.

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API and SDK-General Features

IMPROVISED WAYS FOR SUCCESSFUL VERIFICATION

Send verification codes in the fastest way through our channels in real time. It will automatically retry sending a code and failover to voice if needed.

COMPLYING TO INTERNATIONAL STANDARDS

We ensure that all of your messages will comply with the International Standards and remove the complexity of monitoring global carrier and country regulations.

VERIFICATION FOR LANDLINES & MOBILE

Just give us a phone number! We will detect the number type then select the right channel for you - SMS or voice.

SPAM AND FRAUD PROTECTION

We can detect and block premium, toll-free, and virtual numbers that are used for spam and fraud. The PIN codes that we generate uses the industry standard RFC6238 algorithm that can expire within minutes for maximum protection.

ADAPTABLE TO REGIONAL PREFERENCES

Our system can adapt to native languages and voice accents in regional preferences to maximize verification success.

CUSTOMIZABLE

You can customize or personalize your own message templates. You can also pre-record voice calls and configure the time between retries so you can deliver the user experience that you desire.

Explore Fone API’S Special Features

SDK-Specific

More Protection and Safety

Integrate phone numbers with unique mobile device IDs that can detect SIM swaps. Your users will log out automatically after a given period of time and you can enforce re-authentication.

One Call Verification

You can save your designs and development resources with a customizable User-Interface that is pre-integrated with verification workflows and have login management on every device.

Save more resources

Our SDK uses push notification features so you can verify your users multiple number of times without additional costs.

USE CASES

Password-less login

You can use alternate login passwords with single use codes that are sent over SMS, voice, or push. Phone number identities let you connect your users from their contacts.

Block bulk registration

Authenticate and verify unique phone numbers so you can prevent bots, spammers, and card testers more effectively than just captchas or email verification.

2-Factor Authentication

Allow additional factors to authenticate users without additional hardware costs or complex integration. We ensure global reach from day one.

Password reset

Reset passwords in a very secure manner by making users confirm the ownership of their phone number. It can resolve faster and can eliminate additional help desk costs.

Enhanced authentication

Apply out-of-band authentication on a very high-value transaction or when risk score crosses a threshold and eliminate manual reviews.

User Verification Tiers

Balance user acquisition with compliance by phone verifying lower tier customers instead of heavy and long id verification for all users.

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