Three keys worn together are said to unlock wealth, health, and love. The Japanese have a three key charm for wealth, love and happiness.

Losing keys is a sign of disaster. Usually this means death.

A rusty key is a good sign. Usually it means an inheritance.

When lovers exchange keys it is a sign of unlocking each other's hearts. It symbolizes love and happiness.

Keys are sometimes placed under children's pillows to keep the children safe while they sleep.

It is bad luck to drop a key or to break one.

To dangle bunches of keys on Wednesday is also bad luck. On any other day it averts the evil eye.