ZKBio Access IVS Mobile APP connects to the server of ZKBio Access IVS s oftware directly and achieves data synchronization with software platform. It allows login with two types of user accounts (roles): administrators and empl oyees. When logging in as an administrator, two modules are accessible on th e main menu: Personnel and Access. When logging in as an employee, there would be one accessible functions: mobile credential. Employees can realize contactless check-in. Furthermore, this APP also provides system manageme nt including logging off, personnel information modification and language setti ng, which is currently available in Chinese, English, Spanish and Portuguese options.