A hardware latch for limiting access to protected system memory. The method comprises topical delivery of a local anesthetic to an exterior surface of a surgically closed wound. The first speaker, the second speaker and the first spacer form a first sound path through which the sounds output from the opposing faces of the first speaker and the second speaker pass. Ordinarily, the sources and detectors are coplanar and, preferably, are fabricated or at least mounted on the same substrate. An improved leg opening is achieved by significantly narrowing the width of the front panel from the top of the leg opening down to the attachment portion.