The proposed production system comprises at least a camera producing a raw digital signal and a processing circuit for generating a processed video signal from the raw digital signal. Out of the read signal an auxiliary signal having a relatively low frequency content is generated. An antifog composition is either contained within at least part of the sealant film or is coated on a surface of the sealant film opposite the nylon film. The process sequence does not rely on previously deposited films for collar protection, and decouples TTO sidewall etch protection from previous processing steps to provide additional process flexibility, such as allowing a thinner strap Cut Mask nitride and greater nitride etching during node nitride removal and buried strap nitrided interface removal. Reduced network quality may indicate that the WCD is at risk of losing network coverage.