> For the complete documentation index, see [llms.txt](https://mikethetech.gitbook.io/mikethetech.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mikethetech.gitbook.io/mikethetech.com/projects/software-development/blue-box.md). # Blue Box > "A **blue box** is an [electronic device](https://en.wikipedia.org/wiki/Electronics) that produces tones used to generate the [in-band signaling](https://en.wikipedia.org/wiki/In-band_signaling) tones formerly used within the North American long-distance telephone network to send line status and called number information over voice circuits. This allowed the user, referred to as a ["phreaker"](https://en.wikipedia.org/wiki/Phreaking), to surreptitiously place long-distance calls that would be billed to another number or dismissed entirely as an incomplete call. A number of similar "color boxes" were also created to control other aspects of the phone network." - Wikipedia ## Download * [Itch.io Release](https://mikethetech.itch.io/blue-box) ## Screenshots