Secure login with OTP: SMS, Voice & Push

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Choose and combine the right OTP solutions for your users

Limit online threats and protect your organisation against fraudulent login attempts. By adding One Time Passwords as a second layer of authentication to your login processes, you are sure the login session is done by the authorised user.

CM offers several reliable Two-factor Authentication solutions via One Time Passwords with worldwide coverage. Depending on your users, choose or combine OTP via SMS, Voice and Push. This way, you'll improve both security and the user experience.

  1. Delivery guaranteed
    By choosing our multi-channel solution Hybrid, One Time Passwords are delivered with fallback via one of our other channels.
  2. Flexibility of your choice
    You can use CM’s API to generate OTPs, generate your own passwords and let CM deliver them or use a security partner of your choice.
  3. Access our platform
    Through our platform, you'll be able to use SMS, Voice and OTP for more purposes. Joining CM gives you access all our mobile solutions.


With a 98% open rate within 30 seconds, SMS is known for its high reliability. By sending One Time Passwords via SMS, you are sure to reach your users wherever they are. Even when they don't have access to the internet.

This makes SMS a reliable channel to reach a larger target audience and time cricital messages. Integrating, generating and verifying SMS OTP is easy and secure with our API.

Go to API documentation Generate Your OTP
Mobile OTP message

Voice OTP

An alternative to SMS is Voice, With Voice, the spoken password is received as a phone call on the user's mobile. This way, the passwords will not be stored on the user's phone. Also, Voice allows you to reach users with limited sight. You can also implement Voice as a back-up in case your SMS is not delivered.

Want to know more about our Voice OTP? Contact us now, we are happy to tell you more.

Go to API documentation
Voice OTP message

Push OTP

If you have an app, you can send One Time Passwords via the cost effective channel Push. Your user will be shown the Password in their app, after which it will no longer be seen on their phone. A targeted solution for single login sessions, used for both consumers and employees.

Also want to reach people who don't have your app, or those who are temporarily offline? Read more about Hybrid OTP below.

Go to API documentation
OTP Push message

Two-factor authentication via OTP pricing

Please get in touch for a complete pricelist

Example of prices per destination SMS OTP Push OTP Voice OTP
The United Kingdom£ 0,0480£ 0,0230Pricing on request
The Netherlands£ 0,0758£ 0,0379Pricing on request
Belgium£ 0,0775£ 0,0387Pricing on request
France£ 0,0590£ 0,0295Pricing on request
Germany£ 0,0674£ 0,0337Pricing on request

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