This year I inherited a bar from the suite I'm living it. Not content with a standard wooden bar, I decided to add some upgrades. Currently it requires all 4 members of the suite to be present and turn 4 keys simultaneously. The illuminated missile switch on the side can be used to arm the button. At that point the big red button on the front lights up and the system is armed. The first guest is able to hit the button and the bar goes into party mode and LED on the rim of the bar flash random colors. Guest can hit the button and it will either do nothing, or flash a different sequence of lights based on the position of the missile switch. Once the amp and other stuff for the music server arrives the plan is to get the bar to communicate with the music server and pushing the button initially will start a playlist and send out an email notifying people that we're open.