A document buffer for at least one identification document comprising: a number of processing recorders for respectively recording one identification document each, wherein each processing recorder has an access device for accessing the identification document and a communication interface associated with the respective access device for communication pursuant to a first transmission technology; characterized in that the document buffer further comprises: a network distributor having a number of distributor interfaces (207, 208, 209, 210, 211,212) for communication pursuant to the first transmission technology and a network interface for communication pursuant to a second transmission technology, wherein one communication interface is in each case associated with a distributor interface, and wherein the network distributor is designed to: - convert a first communication signal pursuant to the first transmission technology feedable to a distributor interface into a second communication signal pursuant to the second transmission technology and output the second communication signal to the network interface, or - convert a second communication signal pursuant to the second transmission technology feedable to the network interface into a first communication signal pursuant to the first transmission technology and output the first communication signal to a distributor interface. a number of processing recorders for respectively recording one identification document each, wherein each processing recorder has an access device for accessing the identification document and a communication interface associated with the respective access device for communication pursuant to a first transmission technology; characterized in that the document buffer further comprises: a network distributor having a number of distributor interfaces (207, 208, 209, 210, 211,212) for communication pursuant to the first transmission technology and a network interface for communication pursuant to a second transmission technology, wherein one communication interface is in each case associated with a distributor interface, and wherein the network distributor is designed to: - convert a first communication signal pursuant to the first transmission technology feedable to a distributor interface into a second communication signal pursuant to the second transmission technology and output the second communication signal to the network interface, or - convert a second communication signal pursuant to the second transmission technology feedable to the network interface into a first communication signal pursuant to the first transmission technology and output the first communication signal to a distributor interface. a network distributor having a number of distributor interfaces (207, 208, 209, 210, 211,212) for communication pursuant to the first transmission technology and a network interface for communication pursuant to a second transmission technology, wherein one communication interface is in each case associated with a distributor interface, and wherein the network distributor is designed to: - convert a first communication signal pursuant to the first transmission technology feedable to a distributor interface into a second communication signal pursuant to the second transmission technology and output the second communication signal to the network interface, or - convert a second communication signal pursuant to the second transmission technology feedable to the network interface into a first communication signal pursuant to the first transmission technology and output the first communication signal to a distributor interface. - convert a first communication signal pursuant to the first transmission technology feedable to a distributor interface into a second communication signal pursuant to the second transmission technology and output the second communication signal to the network interface, or - convert a second communication signal pursuant to the second transmission technology feedable to the network interface into a first communication signal pursuant to the first transmission technology and output the first communication signal to a distributor interface.