Finger-counting

Finger-counting or dactylonomy is counting using the fingers. Various systems have existed over time and across cultures, although many have declined in use because of the spread of Arabic numerals.

Finger-counting can serve as a form of manual communication, particularly in marketplace trading – including hand signaling during open outcry in floor trading – and also in hand games, such as morra.

Finger-counting goes back to ancient Egypt at least.

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