Abstract: “User terminal device for accompanying a user of the device while travelling in a geographic region served locally by at least one transport provider, such as a transport authority and/or transport operator, offering passenger transport such as public transport services therein, said terminal device being configured to receive and store a digital token containing digitally signed data and issued by a remote mobility management system trusted, by default, by the transport provider, said token being allocated to the user as a digital proof of the user's subscription to the system, wherein the token exhibits a temporally limited right to utilize the transport services within the region, said signed data being optionally established using a private signing key associated with the system, to transmit a number of wireless signals to the system, including signals indicative of the times and corresponding locations of device during the user's stay within the region to facilitate the system keeping track of the moveme