A data storage device includes one or more non-volatile, blockwise erasable data storage media and a mechanism for sanitizing the media in response to a single external stimulus or in response to a predetermined physical or logical condition. Hydrogen gas is supplied to a combustion chamber and is combusted by a trigger controlled piezo igniter. A dry layer of material soluble in diesel fuel coats the side of the gauge covering the marks and numbers. The method also includes receiving a subscription request from the device, wherein the subscription request requests that the device be automatically subscribed to receive the package. The inventive method advantageously makes it possible to analyze correspondences in a very efficient manner regarding the computing time while allowing fast processing of image pairs even when individual objects are presented at very different points in the two data sets. The cleaning chamber is formed by a cover and the nozzle plate, wherein the gas is routed between the cover and the nozzle plate so as to remove debris and excess ink from the inkjet nozzles and surrounding area.