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Suggestions are as follows: Replace the door: Install a quick-pass door (or a three-roller gate). This method also has its shortcomings, such as fast-passing doors, which are mainly used indoors, with a width of only 55 cm, which allows only one person to pass, and has a counting alarm function. If two people pass at the same time, an alarm will sound. The triple roller brake can be used outdoors, but for those who cross it, the prevention effect is not ideal, such as helping the triple roller brake.
How to effectively prevent trailing in access control systems
Answer: Anti-tailing has always been a difficult problem. The following methods are recommended
Replace the door: install the quick-pass door (or three roller brake). This method also has its shortcomings, such as fast-passing doors, which are mainly used indoors, with a width of only 55 cm, which allows only one person to pass, and has a counting alarm function. If two people pass at the same time, an alarm will sound. The three-roller brake can be used outdoors, but the prevention effect is not ideal for people crossing from above. Three roller brakes are suitable for exhibitions and other places with security personnel.
Install in and out. If someone comes in with the cardholder, if he comes up with it, he must swipe the card to open the door to prevent trailing. However, if the trailer goes out with the cardholder at the same time, the real purpose of preventing tailing cannot be achieved.
Two-way card reader, two doors interlocked. The two-door interlock can basically solve the problem of the tail of the machine, because to open the second door, the first door must be locked, otherwise the second door cannot be opened at all. In addition, there is a more cumbersome method that can be installed, that is, using image processing technology to detect the human body image (of course after acquiring the image), but this method is more cumbersome and requires a lot of knowledge expansion.
If the security level is particularly high, the use of full-height doors or higher interlocking doors (two doors, enter one door after weighing and open the second door) can achieve true tail protection; the disadvantage is that such doors are expensive .