A data storage device includes a memory and a controller and may perform a method that includes updating, in the controller, a value of a particular counter of a set of counters in response to an erase operation to a particular region of the non-volatile memory that is tracked by the particular counter. Semitransparent photodetector materials may be based on silicon or silicon and germanium alloys. The tube is configured to direct the powder material to the bore surface and has an inner surface, an axial section, a radial section, and a bend. Quantifying the error statistics in the system output due to errors in the system input is very essential for a better evaluation of the system behavior. In addition, the production and packaging options for chocolate products are expanded by the use of the invention as the viscosity of the chocolate product or ingredient can be varied easily without specific reliance on cocoa butter content. The label data may be read from a storage medium, and may include user authorization data.