

How can I make this icon more intuitive to the player?
A friend has been beta testing my stealth game Turscar Isle for me. One of his pieces of feedback was that this particular icon in the first image isn't very intuitive. How can I improve that?
Explanation for the icons are in the following spoiler, because I want to see what other people think about it first.
>!First image: stop hacking the server/picking the lock. Second image: start hacking!<