Street Graffiti

Stencil graffiti, originating in the early 1980s, is created by cutting out shapes and designs in a stiff material (such as cardboard or subject folders) to form an overall design or image. The stencil is then placed on the canvas gently and with quick, easy strokes of the aerosol can, the image begins to appear on the intended surface. This method of graffiti is popular amongst artists because of its swift technique that requires very little time. Time is always a factor with graffiti due to the constant threat of getting caught by law enforcement.
Modern experimentation
Modern graffiti art often incorporates additional arts and technologies. For example, Graffiti Research Lab has encouraged the use of projected images and magnetic light-emitting diodes as new media for graffiti writers. The Italian artist Kaso is pursuing regenerative graffiti through experimentation with abstract shapes and deliberate modification of previous graffiti artworks. Yarnbombing is another recent form of graffiti. Yarnbombers occasionally target previous graffiti for modification.