A method of determining access rights for a telecommunication device in a second network as a function of access rights applicable to the telecommunication device in a first network, the method comprising: obtaining data comprising first access rights applicable to the telecommunication device in the first network; determining second access rights for the telecommunication device in the second network based on the first access rights; and applying the second access rights to the telecommunication device in the second network; wherein each of the first and second networks comprises a plurality of assets to which the telecommunication device may be granted access rights, and wherein the first access rights comprise a distinct set of rights applicable to each individual one of the plurality of assets in the first network and the second access rights comprise a distinct set of rights to each individual one of the plurality of assets in the second network, wherein the first access rights comprise access rights previously granted to at least one first asset in the first network and the second access rights comprise access rights to at least one second asset in the second network, and wherein the at least one first asset and the at least one second asset each have an assigned value for at least one characteristic of the asset, wherein the determining of the second access rights based on the first access rights comprises: for each at least one second asset, determining a corresponding asset in the first network having a predetermined degree of similarity to the at least one second asset in terms of the value assigned for the at least one characteristic, and wherein the second access rights are determined based on the access rights granted to the telecommunication device to the corresponding asset in the first network. obtaining data comprising first access rights applicable to the telecommunication device in the first network; determining second access rights for the telecommunication device in the second network based on the first access rights; and applying the second access rights to the telecommunication device in the second network; wherein each of the first and second networks comprises a plurality of assets to which the telecommunication device may be granted access rights, and wherein the first access rights comprise a distinct set of rights applicable to each individual one of the plurality of assets in the first network and the second access rights comprise a distinct set of rights to each individual one of the plurality of assets in the second network, wherein the first access rights comprise access rights previously granted to at least one first asset in the first network and the second access rights comprise access rights to at least one second asset in the second network, and wherein the at least one first asset and the at least one second asset each have an assigned value for at least one characteristic of the asset, wherein the determining of the second access rights based on the first access rights comprises: for each at least one second asset, determining a corresponding asset in the first network having a predetermined degree of similarity to the at least one second asset in terms of the value assigned for the at least one characteristic, and wherein the second access rights are determined based on the access rights granted to the telecommunication device to the corresponding asset in the first network.