Cognalys

=Description=
Cognalys is a mobile verification and authentication tool that uses missed calls to verify a user's mobile number. It is a free and easy-to-use service that does not require a user to enter any personal information or PIN codes. Instead, the user's mobile number is used as their identification and they verify their identity by entering a verification code sent to their mobile number via an automated call.=More Information=
https://www.cognalys.com/