System and method of notifying mobile devices to complete transactions

A method of completing a transaction comprising the steps of:

• registering an authority device for a first account on an auth platform;
• at a website, receiving a login request, the login request comprising a username and password, for a second account;
• the second account linked to a user identity;
• after verifying the username and password as associated with the second account, transmitting both a login transaction request and a descriptor of the user identity, the descriptor retrieved from the second account, from the website to the auth platform;
• at the auth platform, receiving the login transaction request and the descriptor of the user identity;
• at the auth platform, identifying the first account from the descriptor of the user identity, and identifying the authority device registered for the first account from the first account;
• messaging the authority device with the login transaction request;
• at the auth platform, receiving an authority agent response from the authority device;
• verifying the authority agent response is from the authority device registered for the account;
• if the authority agent response confirms the transaction in a transaction approval response, communicating a confirmed login transaction response to the website;
• and
• if the authority agent response denies the login transaction in a transaction rejection response, communicating a denied login transaction response to the website;
• and
• wherein a plurality of authority devices are registered, and messaging the authority device includes messaging at least two authority devices and wherein a authority agent response is received from at least one of the two authority devices.