A process for making a protective and decorative surfacing film comprises extrusion coating a solid polymeric material to form an optically clear first layer on a smooth surface of a carrier sheet. Each rotary device is a right cylindrical section, and is separately rotatable in a chamber of the cartridge. 0 g to about 25 g of sodium hydroxide, about 20 g to about 70 g of ammonia and about 2 g to about 20 g of silver nitrate per 1 liter of water. A rate controller determines the target amount of data to be encoded using scene attribute data and the encoding difficulty data. Method of using the microarrays are also described. Such alerts may assume many forms such as ringing, visual indicators, data readouts, activating ancillary equipment, various flags, etc.