A key locator includes first and second members. The configurable memory unit includes a memory cell comprising a first storage element configured to store a first value and a second storage element configured to store a second value. Also disclosed is a method of manufacturing a polymer sheet by incorporating the microspheres with the polymer. Based on the amounts of the signal detected by the detector, a controller can determine a media input tray condition and a media sheet condition. The body receptacle has a flexible mat that is brought into the intended transport form with the help of tensioning devices.