A delivery head and a delivery device having a delivery head, wherein a pivotable actuating element is provided in order to open an outlet valve when the delivery head is actuated. In a preferred embodiment of the present invention, the structure of the bio-sensing electrode is further simplified to a contacting layer coupled to the signal processing module through the conductive layer so as to reduce attenuation of signal intensity during signal transmitting. The trusted processor also provides a command for the main processor to write a data sequence to a hard drive or similar device, and monitors the data written by the main processor to verify that the data has not been tampered with or otherwise compromised.