Yes, there are toy crane machines that come equipped with a lock and key, adding a valuable layer of security and control. These models are particularly popular for home use, classroom settings, or at parties where you want to manage access to the prizes inside. The lock typically secures the front prize compartment or a separate storage box, preventing children from freely taking toys without playing the game. This feature helps maintain the excitement of the challenge and can be used as a tool for reward-based systems. When shopping, look for keywords like "lockable prize door" or "includes security key" in product descriptions. Brands offering home arcade sets sometimes include this feature to enhance durability and mimic the managed feel of commercial machines. It's a practical solution for parents and educators wanting to combine fun with responsible play.