A Quantum Random Number Generator is a device that generates random numbers using quantum-mechanical phenomena, such as the randomness of quantum states. It is considered to be more secure than classical random number generators because it is based on quantum physics, which is inherently unpredictable. These generators are used in various fields, including cryptography, gaming, and scientific research quantum states are inherently unpredictable, quantum random number generators can produce truly random numbers, unlike classical random number generators that can only generate pseudo-random numbers. These generators are used in applications where high levels of security are necessary, such as encryption keys for secure communication. They are also used in games to ensure fairness and in scientific research for simulations and modeling.