There are several types of access control methods commonly used with automatic gate barriers, including remote control, card reader, and NPR (Number Plate Recognition) systems.

1. Remote Control: Remote control access allows authorized individuals to operate the gate barrier from a distance using a handheld device. This method is convenient and widely used in residential areas, commercial buildings, and gated communities. Users can easily open or close the gate barrier by pressing a button on the remote control.

2. Card Reader: Card reader access control utilizes proximity cards or key fobs that contain unique identification information. Users simply need to present their card or key fob to the card reader, which then verifies the credentials and grants access if authorized. This method is commonly used in office buildings, parking lots, and gated communities, providing a secure and efficient access control solution.

3. NPR (Number Plate Recognition): NPR systems use advanced optical character recognition technology to automatically read and recognize vehicle license plates. This method eliminates the need for physical access cards or remote controls, as the gate barrier can automatically grant or deny access based on the registered license plate information. NPR systems are commonly used in high-security areas such as government facilities, airports, and toll booths.

Each of these access control methods offers its own advantages and can be tailored to suit specific security requirements. It is important to consider factors such as the level of security needed, the number of users, and the ease of administration when choosing the appropriate access control method for automatic gate barriers.