A method and system for service provision, comprising: a web browser (4) in a first communications device (e.g. a personal computer) (2) running a script (8) that is from a remote source (e.g. a remote web server) (30); sending, from the first communications device (2) to a second communications device (e.g. a smart phone) (16), a service request for a service required by the script (8) running on the web browser (4); sending a user authorization request from the second communications device (16) to the first communications device (2); the first communications device (2) obtaining authorization from a user (12); sending a user authorization from the first communications device (2) to the second communications device (16); and the second communications device (16) providing the requested service only if the user authorization is received.