Vidua is an iPhone app provided by Cleverbase ID B.V. that facilitates secure registration for their services. With Vidua, users can achieve a qualified electronic signature, verify their identity, and share personal data securely. Registration is a one-time process done via video call with a Vidua employee, ensuring high-level security. Notably, the registration is valid for 3 years on the same device.

To register with Vidua, users need a valid passport or identity card, the Vidua app on their iPhone, and functioning cameras and microphones. The registration process involves choosing a PIN code, providing an email address, taking a selfie, scanning an ID, having a video call with a Vidua employee, and finally confirming registration with the PIN code.