Aviation Security: Whole Body Passenger Screening

Body Scanner Continued

Current backscatter X-ray body scanners are based upon the technology invented by Dr. Smith in 1992 (Secure 1000). These systems were designed as single sided units. Persons would stand in front of the refrigerator-sized machine and be scanned at least twice (front and back poses) and perhaps as many as four times (additional left and right side poses) to attain full coverage over the body. Vendors have recently introduced two-sided systems by placing two of the base units face-to-face; this allows single pose (front and back) scanning which is more convenient in high throughput applications. Many single pose portals are now installed at US airports - the fundamental design of these systems is now 20 years old. Ait84 is a next generation body scanner. Ait84 is a two-sided (single pose) system designed from scratch, utilizing state-of-the-art technology to overcome three problems of current technology:

  1. First, Ait84 is "Dual Mode" and acquires 5 views of the passenger; thereby improving detection of the hardest to find threats that can be hidden in private/groin areas or on the sides of the body.

    Ait84 acquires these Dual Mode images within the passenger dose limits prescribed by the "ANSI N43.17 General Use" standard that is recognized by the TSA. Furthermore, all dual mode images are acquired within the same scan time required by current technologies.
  2. Second, by acquiring dual mode 5 view-images, AIT84 is able to screen the feet, turbans, hijab, burqa, and some casts and prosthetics - far surpassing the capabilities of other body scanners. Other scanners are unable to screen these items and passengers are subjected to additional hand searches and delays. In this way, AIT84 provides fair and equal screening for all persons - thereby improving throughput and convenience.
  3. Third, Ait84 is about 50% smaller than current systems. The size of body scanners is a barrier to widespread deployment due to space constraints at airport checkpoints. As a solution to the problem, the width of Ait84 lanes are within 6 inches of current WTMD lanes (see figure below) - potentially saving airports hundreds of thousands of dollars in checkpoint reconstruction costs.
    Body Scanner
    Two standard WTMD lanes, side by side, are about 8 feet wide (two 36 inch metal detectors separated by 24 inches). Two Ait84 units occupy 9 feet of checkpoint width. Checkpoints are generally constrained in width, NOT length; this is due to the number of divestiture and recapture tables before and after the baggage X-ray system. Also note that Ait84 is serviced from the inside and can be placed directly against a wall or baggage screening system. By comparison, existing technologies require 19 feet of checkpoint width for 2 units (including service area).

Ait84 is a single pose portal that is Dual Mode and 5-View and is fully compliant with ANSI N43.17 general use requirements.

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