CMB Paiements is a free Android application developed by Crédit Mutuel Arkea that offers secure payment solutions for online and in-store purchases. The app allows users to make payments without sharing their card details, with two payment options available: Paylib and Virtualis.

To use Paylib, the app prompts users to register their mobile device as a "trusted terminal" for added security and more services. Once registered, users can log in with a 5-digit security code or fingerprint authentication if the device supports it.

Paylib is a simple and universal payment solution that allows users to make purchases with their Android mobile device, even for transactions over 20 euros, at merchants equipped with a contactless payment terminal. The payment is secured as the user's bank details are replaced with unique data to avoid the storage of real card numbers.

In addition, the app provides a Paylib online service that allows users to make payments on e-commerce websites without entering their card details. This feature is available for both smartphones and tablets, as well as desktop computers, at hundreds of participating retailers.

Users can activate Paylib and Virtualis services for free on any payment card, excluding Visa for Paylib without contact.

Overall, CMB Paiements offers a convenient and secure payment solution for Android users, with multiple payment options and added security features.