Access control specifies whether resources are accessible based on permissions and enables resource management, is a fundamental requirement for information system security. In this chapter, we define the quantum access control problem using quantum point function and an abstract model of the graph-based access control problem. By defining the auxiliary problem of the quantum access control problem, the exponential scale problem of valid inputs encountered during the process of proving the obfuscatability of the quantum access control problem is resolved, and the obfuscatability of the quantum access control problem is demonstrated.