Randomly press the intercom buttons until someone buzzes you in. Wait 5 minutes for someone to come in or out (most likely a delivery driver) and tailgate behi

Randomly press the intercom buttons until someone buzzes you in. Wait 5 minutes for someone to come in or out (most likely a delivery driver) and tailgate behind them. A locked building door is the weakest possible form of security. It isn't holding anyone back, whether kids or homeless or whoever else.