A view function is a type of function in smart contracts that allows users to access specific information without altering the state of the contract. It is particularly useful for querying data, such as balances or transaction histories.View functions do not consume gas when called externally because they do not initiate any state changes. This makes them efficient for retrieving information. Users can utilize these functions without incurring costs, making it easier to interact with the blockchain.In practice, a view function can be called by anyone without permission. It ensures that necessary data is quickly accessible. However, it is important to remember that while view functions can provide critical information, they do not allow any modifications to the contract until a separate transaction is made. Overall, view functions enhance transparency and usability by making vital data readily available to users, thus promoting better interaction with smart contracts.