A first device implements an application platform that is shared with a second device. The application platform can be implemented so that the first device and the second device operate to have a same identity to at least the network service. The first device provides a user interface in order to receive input for accessing or using the network service. Additionally, the first device communicates input received in response to providing the user interface to the network service. The first device can receive a token from the network service in response to communicating the input. Additionally, the first device can communicate a set of data items to the second device. The set of data items includes the token and one or more identifiers that enable the second device to access and use the network service while appearing as the first device to the network service.