Around 3250-3200 BCE, Egyptian hieroglyphs appeared on bone and ivory tags, pottery vessels, and clay seal impressions at Abydos in Upper Egypt. These inscriptions, found in the tomb of predynastic ruler Scorpion I, recorded quantities and origins of commodities like grain and textiles for administrative purposes. The glyphs functioned as a phonetic writing system using a rebus principle where pictures represented sounds. These hieroglyphs emerged shortly before Egypt's unification under the First Dynasty. Whether Egyptian writing developed independently or was influenced by Mesopotamian systems remains debated among scholars.