Tā moko are traditional Maori tattoos.
They were typically done with a chisel and mallet; various types of ash and soot were used for dye. Some still use the uhi, although most artists have updated to slightly less painful methods. Tā moko were symbols of social rank and status, and being tattooed was an important ritual in Maori culture. Men might have elaborate patterns covering large portions of their legs and heads, while women were generally only tattooed around their mouth and chin.
Maori consider it offensive for non-Maori to wear these markings, as they’re considered sacred in Maori culture.
Maori gent w/ traditional facial tattooing.
Image jacked from this guy.