Bluenumber is a global platform for self-identification and voluntary traceability - an open, neutral registry for people to identify themselves, be linked to supply chains, and be seen in complex systems. Bluenumbers uniquely identify people, organisations, places and things anywhere on Earth. Governments and businesses use bluenumbers to make policy and procurement decisions. NGOs and communities design targeted sustainability initiatives. Bluenumbers can show who produced the food for your table, made your clothes, or mined the metal for components in your phone or laptop.