Portable, emergency call-capable
mobile radio device (10) comprising: a first
wireless communication interface (60) implementing a WLAN access point, and / or, a second
wireless communication interface (61) implementing a near-field communication protocol, and / or a third
wireless communication interface (62) implementing a short-range radio communication protocol, a storage device (40, 50), at least one sensor (71) designed to measure
vital signs of a user, a
control unit (30) which is designed to - to cause the portable, emergency call-capable
mobile radio device (10) to store the
vital signs measured by the at least one sensor (71) in the storage device (40, 50), - in response to a predetermined event, to cause the portable, emergency call-capable
mobile radio device (10) to make an emergency call and to store a time at which the emergency call was made in the memory device (40, 50), - in response to the emergency call made, to activate an emergency operation and to cause the portable, emergency call-capable mobile radio device (10) to transmit radio signals using the first, and / or second and / or third communication interface (60-62) during the activated emergency operation, wherein the radio signals transmit the time at which the emergency call was made and / or at least one piece of identification information characterizing the portable, emergency call-capable mobile radio device (10), and - only in response to the emergency call, to enable the transmission of vital values stored in the memory device (40, 50) using the first and / or second and / or third wireless communication interface (60-62) and / or the retrieval of vital values stored in the memory device (40, 50) by an external electronic device, wherein the
control unit (30) is designed to cause the portable, emergency call-capable mobile radio device (10) to transmit the stored
vital signs in encrypted form, the time at which the emergency call was made being used as a symmetric key, and the portable, emergency call-capable mobile radio device (10) is designed to be worn on the user's body.