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I need to implement an access control system for a bank.
The system will be comprised by a double glass door system. When a customer wants to access the bank, he has to press a button from the exterior which will open the first door. Once insed, the first door will close and the customer will confined between both doors. Ge will then be able to press a button in order to open the second door, and gain access into the building.
As a security complement, the space between both doors is monitored by a control cabin. A security guard will have a scanner view of the person who's opened the first door, and if he suspects anything he can activate a distress signal. This signal will block the interior door and unblock (open) the exterior door automatically, allowing the person to exit the building without having to press the button.
Both doors have two buttons each, one on either side. However both buttons, generate a single signal, and each door has onl...
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