Facial recognition technology has been used to track visitors to Newgrange in Ireland. This technology uses an algorithm to recognize and match the facial features of individuals, allowing for efficient visitor tracking. It is especially useful for large sites like Newgrange where there are many people visiting each day and it would be difficult to manually keep track of them all. The facial recognition system can quickly identify a person’s identity without requiring any additional information or authentication from the individual, making it easier and faster for security personnel to do their job. This technology can be used as an extra layer of security by verifying that those who are entering the site are indeed authorized visitors.