Caskets, cap panel assemblies for a casket, and methods for manufacturing cap panel assemblies are described. The flexible circuit film includes a base substrate, a signal transmission line and a crack-preventing portion. The event subscriptions identify the position and attributes that any desired event notification would take in the schema definition. This indigo-like product may have a higher residence time in tissues where it is formed, thus providing a detectable product localized to sites of high FROS.