A system and method for switching between voice signals. The triple layered ACA film of the invention comprises: a main ACA film based upon epoxy resin and containing conductive particles having a particle size of 3 to 10 m and optionally non-conductive particles having a particle size of 0. In one embodiment, the low voltage external power source is a conventional car battery that is connected to the hybrid electric vehicle by way of jumper cables. The computer system grants or denies access to the restricted records based upon the indication from the client. The guard members are suspended within the interior of the frame, with each of the guard members being formed of metal tubing. One or more front-end applications for automated sensing of user activities and sensor-based personal assistant capability may be provided.