IEE's TDflex™ is a Tailgate Detector with two main operating modes: • Virtual mantrap • Real mantrap Virtual Mantrap Mode In this mode, IEE's TDflex™ monitors single access points to and from a secure area and is usually installed in front of doors. It is also possible to monitor mechanical or optical turnstiles, or virtual access points without any physical barrier. If an unauthorized person attempts to gain access, IEE's TDflex™ generates an alert. This means that, depending on the security strategy, the door can be locked as a preventative measure (“high security strategy”), or if the secure area is breached, an alert can be triggered. IEE's TDflex™ can also monitor people leaving the secure area to ensure there is no tailgating – effectively forcing people to badge out. In the virtual mantrap mode the following outputs are provided: • Access recommendation • Pre-alert • Tailgate alert • Status indicators • Abort credit

Real Mantrap Mode In the real mantrap mode, IEE's TDflex™ monitors any space within two or more interlocking doors. In this mode, IEE's TDflex™ does not consider authentication credits (inputs) from the access control system; it continuously provides the occupancy status of the mantrap. This is then used to safely control the doors. With the classic strategy of “single person transfer”, which enforces the transit of one person at the time, IEE's TDflex™ provides the following outputs: • Empty • Only one person • Suspicious e.g. more than one person or a person behaving abnormally As an alternative to “single person transfer”, IEE's TDflex™ can also ensure secure transit of multiple people at a time, by counting the people inside the mantrap. This allows for higher throughput without compromising securi