That means the feature can be used while the device's display is off, so users don't have to hit the power or home button to turn on the display just to use the feature.
It also doesn't matter what form or shape the figure should take, as long as there's at least one intersection point. And users will be able to customize the drawings to turn on specific apps.
The patent application reads "The hot key function includes various applications or functions that are provided by the mobile terminal, and a specific application or function corresponding to the number of intersections is executed. The specific application or function includes a camera, a phone number list, a message, a call, and various applications or functions that are provided by the mobile terminal.
"The user may freely touch a touchscreen since there is no limitation in terms of size, location, and pattern of a touch input, and since a standby screen is displayed or a specific application is quickly executed according to the number of intersections of a closed surface."