A user account access management system includes a computing platform having a hardware processor and a system memory storing a user account access software code. The hardware processor executes the user account access software code to receive, from a first user device, a secondary account profile data for generating a secondary account associated with a primary user account registered with a web based service, and to receive, from a second user device, a sign up request for using the web based service. The hardware processor further executes the user account access software code to transmit an authentication token to one of the first user device and the second user device, receive the authentication token from the other of the first user device and the second user device, and link the secondary account with the second user device based on receiving the authentication code.