Embodiments enable searching of portions of objects in images, including programmatically analyzing each image in a collection in order to determine image data that, for individual images in the collection, represents one or more visual characteristics of a portion of an object shown in that image. The MR sensor includes a free layer and a pinned layer. The cylinder bank is reactivated sequentially based on exhaust catalyst temperature. In one embodiment, a stainless steel guidewire is utilized, and is subjected to annealing heat treatment in selected areas. If it is determined that the malware alert is suspicious for any reason, then the malware alert is determined to be potentially generated by rogue security software and the user is prevented from seeing, andor responding to, at least without a warning, the malware alert until a more definitive analysis can be performed. Transitions of the ReadWrite control line during a burst access will terminate the burst access, reset the burst length counter and initialize the device for another burst access.