Technological watch

A biodegradable system includes a biodegradable substrate which can be a biodegradable paper or polymer. A biodegradable power source is printed or deposited above the substrate, and biodegradable processor and communication circuits are in turn formed on the substrate. The processor and wireless communication system can communicate with a remote computer to provide information about the source of the items (optionally tracked using the blockchain supply chain tracking), the relevant dates (production and expiration dates), any attempt to tamper with the packaging, and suitable warnings or usage instructions, for example. Optionally, a biodegradable display can render information to a customer, for example.