A seismic sensor for a security system is described, the sensor comprising: a piezoelectric transducer suitable for converting mechanical stresses into electrical signals; a base structure including a seat suitable for receiving said transducer; a cover element that can be coupled with the base structure to define an inner chamber of said sensor. This is accomplished with the creation of triangular ring that extends upward from the top edge of the voice coil bobbin with that ring mating with a flat diaphragm at a right angle directly above the top edge of the bobbin. The nanostructure mat comprises a plurality of nanostructures having a surface ionization state which causes more than one layer of hydrogen to adsorb onto the nanostructures. The off screen pointing may provide a variable scrolling function or other control function. The student receives instruction leading to a degree or certification and the school district, in the case of pubic schools, receives at seat credit for funding.