1460012996-88871ae4-dbe0-4686-820f-9ef05e99703d

An HGA dynamics tester and method are provided in which a shear mode piezo actuator having a dimensional change responsive to an input voltage while supported on a mass is coupled through an HGA support to impart movement to the HGA responsive to the actuator dimensional change. The device attaches to sheetrock walls through magnetic attraction to sheetrock screws or nails. The frame has inwardly directed lips contiguous with a rear face of the frame that locate behind the faceplate on opposite sides of the opening clear of the fixing screws used to secure the faceplate to a mounting box. A page flipping tool is also provided. The memory has rings of different security.