Air New Zealand requests passengers to participate in a month-long survey by weighing themselves after checking in for international flights from Auckland International Airport. The initiative complies with a regulatory requirement by the Civil Aviation Authority to calculate the weight and balance of planes before takeoff. The airline aims to weigh 10,000 passengers but assures anonymity and privacy, with the data going directly into the computer without being displayed publicly. Aviation experts believe that Air New Zealand's methods and data collection could significantly benefit the industry, and other airlines may consider implementing similar measures.