We should use the ancient Inca system of the Quipu:
records (and count) of items and people were kept on an array of colored, knotted cords called quipu. Color, type of knot, spacing and placement of the cords were all meaningful and part of a code that was used to send information on production, census, resources, and taxes owed or collected to distant parts of the empire. Runners carried the quipu which were then decoded at their destination. Quipus had anything up to 2,000 strands.
Of course if anything went wrong I am sure the Inca empire had severe penalties.
We should use the ancient Inca system of the Quipu:
records (and count) of items and people were kept on an array of colored, knotted cords called quipu. Color, type of knot, spacing and placement of the cords were all meaningful and part of a code that was used to send information on production, census, resources, and taxes owed or collected to distant parts of the empire. Runners carried the quipu which were then decoded at their destination. Quipus had anything up to 2,000 strands.
Of course if anything went wrong I am sure the Inca empire had severe penalties.