The combination of these two techniques [steganography & ASCII art] gives us "ASCII Art Steganography". There are wide potential applications of this technique, and a website is created to demonstrate it (...)

http://www.vincentchu.com/asciiartsteganography.html

https://web.archive.org/web/20090113052401/http://pictureworthsthousandwords.appspot.com/

https://web.archive.org/web/20090117121817/http://www.sfu.ca/~vwchu/

Conference Paper: "ASCII Art Steganography. ASP.NET Web-based Case Study", Grujoski, Vlatko & Dmytro, Zubov. (2014). 10.13140/RG.2.1.4160.2400.

https://www.researchgate.net/publication/275349039_ASCII_Art_Steganography_ASPNET_Web-based_Case_Study