Yes, toy crane machines can and should be locked for security. These popular arcade games are often targets for theft and vandalism due to the cash and prizes they hold. Most machines come equipped with built-in locking mechanisms, typically featuring sturdy metal hasps designed for padlocks. Using a high-quality, tamper-resistant padlock is the first line of defense. For added security, consider installing internal cabinet locks or electronic locks that require a keycode. It's also crucial to place the machine in a well-lit, monitored area and to empty the cash box regularly. Implementing these security measures protects your investment, ensures operator safety, and maintains the machine's integrity for customer enjoyment. Regular checks of all locks and hinges are recommended as part of routine maintenance.