SS13 Mechanics Device: Restricted Access to Doors

-=COMPONENTS=-
1x Wifi Component (WIFI-1)
1x Relay Component (RLAY-1)
1x Fingerprint Scanner Component (SCAN-1)
1x Signal Checker Component (CHCK-1) You can use more signal checkers, set up in the same way, to allow more people in.

-=COMPONENT SETUP=-
WIFI-1
Frequency: 1411

RLAY-1
Signal replacing: On
Send signal: command=open&address_1=<address of your door>

The address of the door can be found by using a screwdriver on it and clicking with a bare hand. While you're at it, find the ID check wire of the door and cut it. This will prevent it from opening normally (ie, when anyone with an authorised ID walks into it).

CHCK-1
Check string: <your fingerprint>

You can find your fingerprint with a forensic scanner, or by connecting SCAN-1 to an output device like a sound synthesiser or thermal printer and scanning your hand.

-=POSITIONING=-
Put SCAN-1 on the wall next to the door you want to control this way. The other components can go anywhere.

-=CONNECTION=-
SCAN-1 --> Check signal --> CHCK-1
CHCK-1 --> Relay signal --> RLAY-1
RLAY-1 --> Send signal  --> WIFI-1

-=OPERATION=-
If you've done everything right, just click on the hand scanner and your door will open.

-=FURTHER DEVELOPMENTS=-
In its current state, the device will not allow you to close the door manually, as the ID check wire is cut. You will have to wait until it automatically closes. How could you modify the device to let you close the door with the scanner as well as open it? Hint: You can connect components directly to doors as both triggers and receivers.

When the AI control wire in a door is cut, it no longer responds to wifi instructions. How could you modify the device so that you can open the door with it, but the AI can't? You'll find your answer in the Vendomat machines around the station.