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icon_2fa_docs_center_33px_white_
Authentication | FAQs - General

Looking for an answer to a specific question? We've collected the most frequently asked questions about Authentication for you. 

If any questions arise while reading, you can contact us under support@tyntec.com. 

sms_faqs_01_

General

Frequently Asked Questions

What is the difference between 2FA API and tyntec’s OTP SMS API?
How does the 2FA API work?
What usecases does the 2FA API support?
Can I use the 2FA API with any number in the world?
How can I retry a verification attempt?
How much is tyntec’s 2FA API?
Is there a charge for additional verification attempts?
How long does it take to verify a phone number with tyntec’s two-factor authentication codes?
How are PIN codes for 2FA generated?
How do I map the PIN code/OTP the customer enters for the original request?
What is the length of a 2FA PIN code/ one-time password?
Can I provide my own 2FA codes?
What should I do if I haven't received a 2FA PIN code?
What is the validity period for 2FA API’s PIN codes?
Why is my 2FA SMS/TTS (Text-to-Speech) call not in the primary language of the destination country?
What are the benefits of using phone numbers as a digital identifier?
Why should I use SMS for authentication?
How many times can a customer enter a PIN code?
Where can I see the status of a PIN code/OTP?
What happens if the line is busy or there is no answer when receiving a TTS call?
How do I know whether TTS or SMS will be used?
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