Abstract: A system supporting identity verification for an end-user, the system including a hardware processor configured for sending a link, which directs an end-user to a software functionality, such as but not limited to a web application, native app/native sdk, web app desktop, web sdk, which is operative for end-user identity verification, to an end-user's mobile phone, thereby to open an identity verification session when the end-user clicks on the link; and wherein data is elicited from the end-user via the software functionality activated by the end-user's clicking on the link. Typically the software functionality processes at least one image captured by at least one end-user's cellphone during the session or in real time or near real time, and for at least one image so captured, detects, and communicates to the end-user that the image is of unsatisfactory quality.