This popular thieves’ tattoo is the symbol of a pickpocket, a ‘pincher’. Tattoos of this type made on both sides of the neck denote multiple violations of prison regulations. Between the thumb and the index finger.
I have this as a tattoo to represent my partner, with some subtle colour added. Just found out it is originally an embroidery design from "Make your next crafty move a good one with this chess-themed design! Dynamic strokes make up a stylized knight.