An adhesive bandage , comprising: a thin sheet having an underside provided with a selfadhesive; a wireless transmitter; a memory unit , coupled to the wireless transmitter, for storing a patient identifier (ID) and for storing patient data that comprises measurement thresholds, vital signs measurements and treatment data; a monitor , coupled to the memory unit , for monitoring vital signs and for generating the vital signs measurements; a wireless receiver for receiving requests to obtain requested patient data; an alert generator , coupled to the memory unit , for generating an alert if a vital sign measurement reached an associated measurement threshold; and a processor , coupled to the wireless transmitter, to the wireless receiver and to the memory unit , and configured for determining whether to transmit, by the wireless transmitter, the requested patient data and the patient identifier (ID); and for determining whether to transmit, by the wireless transmitter, the alert and the patient identifier (ID); and for determining whether to retrieve requested patient data from the memory unit or to send a second request to obtain patient data from an external database via the wireless transmitter; and wherein at least one component out of the processor , the alert generator , the wireless transmitter, the memory, the monitor , the memory unit and the wireless receiver is connected to the thin sheet. a thin sheet having an underside provided with a selfadhesive; a wireless transmitter; a memory unit , coupled to the wireless transmitter, for storing a patient identifier (ID) and for storing patient data that comprises measurement thresholds, vital signs measurements and treatment data; a monitor , coupled to the memory unit , for monitoring vital signs and for generating the vital signs measurements; a wireless receiver for receiving requests to obtain requested patient data; an alert generator , coupled to the memory unit , for generating an alert if a vital sign measurement reached an associated measurement threshold; and a processor , coupled to the wireless transmitter, to the wireless receiver and to the memory unit , and configured for determining whether to transmit, by the wireless transmitter, the requested patient data and the patient identifier (ID); and for determining whether to transmit, by the wireless transmitter, the alert and the patient identifier (ID); and for determining whether to retrieve requested patient data from the memory unit or to send a second request to obtain patient data from an external database via the wireless transmitter; for determining whether to transmit, by the wireless transmitter, the requested patient data and the patient identifier (ID); and for determining whether to transmit, by the wireless transmitter, the alert and the patient identifier (ID); and for determining whether to retrieve requested patient data from the memory unit or to send a second request to obtain patient data from an external database via the wireless transmitter; and wherein at least one component out of the processor , the alert generator , the wireless transmitter, the memory, the monitor , the memory unit and the wireless receiver is connected to the thin sheet. <EOS>