The present invention is directed towards systems and methods for generating and displaying the difference between a primary result set and a secondary result set. A parcel keeper receptacle is a lockable box secured, locked or attached at a delivery address accessible by delivery persons with the interior accessible using an access code, optionally having an indicator specifying whether a package is inside. Said use is advantageous in protecting and stabilizing the nucleic acids of human skin cells. In a modified local self boosting scheme, zero volt or low voltages are applied to two or more word lines on the source side and to two or more word lines on the drain side of the selected word line to reduce band-to-band tunneling and to improve the isolation of the channel areas coupled to the selected word line. The process or apparatus may be incorporated in a storage system controller, a RAID controller, a software SCSI stack in a computer, an operating system, a storage device driver, or another appropriate application that interfaces with standard and commodity storage system components.