A method includes receiving, by a service provider platform, a service request from a first client device, and a first instance of an authentication token associated with the service request and generated by the first client device. The service provider platform may further receive, from a second client device, a second instance of the authentication token associated with the service request and generated by the first client device. Responsive to determining that the first instance of the authentication token matches the second instance of the authentication token, the service request is processed by the service provider platform.