A method for establishing an assignment of a patient identity to a treatment station, wherein the treatment station comprises a dialysis machine and all accessory parts necessary for a pending treatment, comprising the steps: generating at least one graphic code, which in each case encodes an identification feature of the treatment station and/or of a part that cooperates with the treatment station, applying the at least one graphic code to the treatment station and/or to a part, which cooperates with the treatment station, entering a patient identity of a patient assigned to the treatment station at the treatment station, transmitting the patient identity and the at least one identification feature to an allocation unit, establishing an assignment of the patient identity to the at least one identification feature on the allocation unit, which represents a pairing of identities, establishing an assignment of further data records to the pairing of identities, wherein the data records comprise: information about patient-individual therapeutic or medical and/or physiological data, data about the dialysis machine, the equipment thereof or the dialysis station, to which the dialysis machine belongs, entering the at least one graphic code on the treatment station and/or on a part that cooperates with the treatment station, by means of a mobile computer, decoding the at least one graphic code in the mobile computer and thus obtaining the at least one identification feature, transmitting the at least one identification feature to the allocation unit by remote data transmission together with an identification feature of the mobile computer; checking the authorization of the mobile computer in the allocation unit by means of the identification feature of the mobile computer as to whether the mobile computer is authorized to receive data packets, sending data packets from the allocation unit to the mobile computer depending on the checking, wherein the data packets comprise the pairing of identities and the data records assigned to the pairing of identities. generating at least one graphic code, which in each case encodes an identification feature of the treatment station and/or of a part that cooperates with the treatment station, applying the at least one graphic code to the treatment station and/or to a part, which cooperates with the treatment station, entering a patient identity of a patient assigned to the treatment station at the treatment station, transmitting the patient identity and the at least one identification feature to an allocation unit, establishing an assignment of the patient identity to the at least one identification feature on the allocation unit, which represents a pairing of identities, establishing an assignment of further data records to the pairing of identities, wherein the data records comprise: information about patient-individual therapeutic or medical and/or physiological data, data about the dialysis machine, the equipment thereof or the dialysis station, to which the dialysis machine belongs, entering the at least one graphic code on the treatment station and/or on a part that cooperates with the treatment station, by means of a mobile computer, decoding the at least one graphic code in the mobile computer and thus obtaining the at least one identification feature, transmitting the at least one identification feature to the allocation unit by remote data transmission together with an identification feature of the mobile computer; checking the authorization of the mobile computer in the allocation unit by means of the identification feature of the mobile computer as to whether the mobile computer is authorized to receive data packets, sending data packets from the allocation unit to the mobile computer depending on the checking, wherein the data packets comprise the pairing of identities and the data records assigned to the pairing of identities. information about patient-individual therapeutic or medical and/or physiological data, data about the dialysis machine, the equipment thereof or the dialysis station, to which the dialysis machine belongs, entering the at least one graphic code on the treatment station and/or on a part that cooperates with the treatment station, by means of a mobile computer, decoding the at least one graphic code in the mobile computer and thus obtaining the at least one identification feature, transmitting the at least one identification feature to the allocation unit by remote data transmission together with an identification feature of the mobile computer; checking the authorization of the mobile computer in the allocation unit by means of the identification feature of the mobile computer as to whether the mobile computer is authorized to receive data packets, sending data packets from the allocation unit to the mobile computer depending on the checking, wherein the data packets comprise the pairing of identities and the data records assigned to the pairing of identities.