Five dots tattoo

The five dots tattoo is a tattoo of five dots arranged in a quincunx, usually on the outer surface of the hand, between the thumb and the index finger.
The tattoo has different meanings in different cultures—it has been variously interpreted as a fertility symbol, a reminder of sayings on how to treat women or police, a way members of People Nation or Nuestra Familia affiliated gangs identify themselves, a recognition symbol among the Romani people, a group of close friends, standing alone in the world, or time spent in prison.
Thomas Edison had this pattern tattooed on his forearm.