A user device (110) is connected to a web server (120) via a network (130). An owner (140) communicates with the web server and has a communication channel (141) to the user device. The owner initiates an URI assignment request to the user device and obtains the device credentials via the communication channel (141). The owner provides the credentials to the web server via a communication channel (121). The web server sends the credentials to the user device which compares the credentials with its memory (110a) and replies with the URI status. The web server sends the URI assignment to the user device which accepts and confirms back to the web server which sends a locking message to the user device. The owner can revoke the URI using a password that is verified by the user device, which deletes the URI. An advantage is that the owner can acquire the URI without being the owner of domain.