Access to

Combine a unique identifier device (aka a mobile phone) with contextual data, and you have secure, user-friendly two-factor authentication.



The most popular way to send one-time passcodes that’s easy to use and strong enough to meet the compliance requirements.



A full-featured robust API that detects the phone number type (mobile or landline) and sends the passcode via the appropriate channel (SMS or voice) – complete with multi-language and customization support.

Here're some great ways
to use Authentication in your business
Make the most of
tyntec's advanced features
Assured, speedy delivery

Using our direct connections to telecom operators, we ensure fast, secure delivery to the endpoint – and share the monitoring data with our customers. 

Coverage tyntec

Frictionless integration

Stronger authentication with less coding – welcome to our simple, robust authentication APIs. Developers can configure features according to their needs, including password generation, language templates and more.

integration 2fA

Real-time verification

Building on our industry-leading number information service, we can dynamically adjust user authentication requirements depending on the threat level, using real-time phone number information such as roaming information, user location, and phone status (on/off).

real time number verification


which service works best for you
2fa, SMS OTP, authentication


Key factors to consider
When choosing an authentication method


  • when does authentication become really critical?
  • is there a single most important factor when choosing an authentication method? (hint: users first)
  • is authentication bad for Customer experience?
  • what are the pros and cons of different methods?
  • why is SMS still the most popular delivery method for 2FA?
Authentication made easy
This is how it works



1. User attempts to verify a transaction online.

2. Enterprise submits the number verification request to tyntec. tyntec creates a PIN and sends it via the most appropriate channel (SMS or voice).

3. User receives the PIN and enters the code to verify the transaction.

4. tyntec matches the entered PIN against the passcode sent to the user.

5. Enterprise authorizes/denies the transaction.

It's simple.
Try it out.
2FA Demo
Here’s a chance to test 2FA yourself. Simply type in your phone number below. Click SEND and we’ll send you a one-time passcode – either by text or voice. You can even select the language of your choice.
# Send an otp with minimum mandatory values:

curl \
-H "accept: application/json" \
-H "apikey: <YOUR_API_KEY>"

# Check an OTP code:

curl \
-X POST "<OTP_ID>/check?otpCode=<OTP_CODE>"
-H "accept: application/json" \
-H "apikey: <YOUR_API_KEY>"
security 2fa authentication

Consumer Protection

Balancing usability and security

tyntec's partner Isaac Potoczny-Jones, CEO of Tozny, a leader in multi-factor authentication systems, discuss the common mistakes brands make with security.

TAD summit Demo Chatbots

Watch our demo

Check out this video on CRM, Chatbots and Authentication shown at TADSummit 2017.



Transparent Pricing
  • Mobile Chat
    Send a message
    0.012 €
    Receive a message
    0 €
  • Voice
    Voice Calling
    To landline numbers
    0.003 €
    To mobile numbers
    0.338 €
  • Messaging
    Local SMS
    Send a message
    0.062 €
    Receive a message
    0 €
    Short Code
    3900 €
    1300 €
    Send a message
    0.086 €
    Receive a message
    0 €
    Virtual Phone Number - Landline
    1.11 €
    1.11 €
    Send a message
    0.085 €
    Receive a message
    0.013 €
    Virtual Phone Number - Mobile
    0 €
    33 €
    Send a message
    0.072 €
    Receive a message
    0 €
  • Number Information
    Portability Check
    Per successful query
    0.0019 €
  • Authentication
    Per successful authentication
    0.09 €
Ready to start?
Get in touch.
tyntec references