A video game facility which enables users to avoid detection when playing at work by displaying a spreadsheet or other fake display when a certain key is pressed.
Example sentencesExamples
In the old days boss keys would put up a fake spreadsheet or something
In a real panic situation finding the boss key can be difficult.
This was a fairly common feature in early computer games for personal computers, when most boss keys were used to show dummy DOS prompts.
If your employer is stupid enough to be fooled by employees using boss keys to evade personal web use detection, then your job (even your life) is probably in danger.
The boss key also comes in handy since the system requirements aren't high and playing a game or two during the course of the work day is easy.