Boring lines from tape turn out can be something very creative and unique. It is another way to create a graffiti which is not destructing the wall.
An Australian street artist, Buff Diss, was incidentally saw tapes drawing pattern in their own, when he was using them as a tool in 2005. He uses tapes after since to create drawings and illustrations on wall. This method is actually around since 1989, but it became less popular because it is non-permanent and difficult to document.