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jmchuster
on May 15, 2020
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Port knocking
An intercom that lets someone at the gate talk to the apartment in question to try to convince them to buzz them in?
mike_d
on May 15, 2020
[–]
Yes. They press an apartment number which dials your phone. "Hey your pizza is here", then you press a button on your phone which opens the outer gate or the front door to the building. You then meet them at your front door.
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