What is a technology used to track food freshness?

Smart packaging with expiration indicators is a technology designed specifically to help consumers and retailers track the freshness and safety of food products. This innovative approach often utilizes sensors or dyes that change color in response to chemical reactions occurring as food approaches spoilage. By providing visual cues regarding the food's condition, smart packaging enhances food safety and reduces waste, allowing for better inventory management and informed decision-making by both consumers and food distributors.

In contrast, conventional vacuum sealing primarily preserves food by removing air, which can prolong shelf life but doesn't actively inform about freshness. Standard wrapping in plastic merely protects food from environmental factors like moisture and air without offering any freshness indicators. Similarly, storage in metal containers is a method of food preservation that does not provide any real-time feedback regarding the food's quality or freshness. Hence, smart packaging stands out as the most effective technology for tracking food freshness.