1.   An employee then came out and escorted the client to an apartment with blacked-out windows, where tattoo machines buzzed in the back.

2.   On his right arm, water and flames swirl around a creature spewing a tattoo machine.

3.   The change has been made possible by technological breakthroughs in tattoo machines, and by the increasing legions of tattooers who have been trained as artists.

4.   Instead of using a hand-held mechanized tattoo machine, the artist injected ink by hand with a needle.