Our team identified an Inca-era khipu, known as KH0631, with a primary cord made entirely of human hair from a single person.

Inca society kept records by encoding information into knotted cords called khipu. A new analysis of hair woven into these ...

Inca society kept records by encoding information into knotted cords called khipu. A new analysis of hair woven into these ...

Analysis of the hair used in a knotted device reveals the owner’s simple diet. That suggests commoners, not just the elite, kept records in Inca society.