Abstract: A capacitive sensing system (2, 2?, 2?) is used to measure a timevarying ion current through a channel (50), such as an ion channel or protein pore. Such a capacitive system (2, 2?, 2?) does not suffer problems of electrode corrosion and, when used with methods to control a build up of ion concentration, allows the use of measurement volumes (10, 20) around the channel (50) with dimensions on a scale of nanometers.

Abstract: A personnel security screening and control system includes a screening center having a threat screening system incorporating a sample collector and a sample analyzer. The sample collector obtains a threat sample from the subject which is subsequently analyzed by the sample analyzer to determine whether the individual represents a potential threat. The overall system also incorporates a demographic screening system including a demographic collector and a demographic analyzer. The demographic collector obtains a demographic indicator which is subsequently analyzed to determine a particular demographic of the subject. The screening center provides an interactive system for determining whether a subject has encountered or handled a substance that may pose a potential threat, e.g., explosives, and also presents targeting advertising or other information to the subject.

Abstract: A visitor control and tracking system for a venue having various access points and multiple destination points includes a monitoring system that tracks location and movement of visitors to the venue. Prior to entering the venue, visitors first interact with one of a plurality of screening centers which performs a security scan. A controller operatively connected to the plurality of screening centers determines a visitor associated metric for each of the plurality of destination points. Once the controller determines the visitor associated metric, information is provided to the visitors that will help guide them about the venue. The information can be provided on a display provided on each of the plurality of screening centers and/or on displays provided about the venue.

Abstract: A security screening and support system for a venue having a plurality of access points includes a plurality of screening centers connected to a central control. The plurality or screening centers are arranged so as to be located in relation to the plurality of access points of the venue. The screening centers collect threat samples from subjects entering the venue, with the samples being screened for a threat signature, such as explosives. If a subject tests positive, an alert status is sent to the central control and a response, which is preferably randomized from a plurality of standard operating procedures, is enacted. The central control enables security personnel to view, monitor, respond and analyze threat situations.