The present invention relates to a blood pressure measuring device (1) for measuring at least one blood pressure value of a patient. The blood pressure measuring device (1) comprises a processing unit (17) which is adapted to automatically recognize a specific patient out of a predefined group of patients and to assign an at least one blood pressure value to said patient. The invention further relates to a computer software product for a blood pressure measuring device (1) and a method to allocate a measured blood pressure value to a specific patient.