The Blue2-Bluetooth Switch is an external control item with access to iOS devices via a Bluetooth connection, which is convenient for impaired hand-motion users for operation on iOS devices, unlocking doors for these users to access to the internet.

To better cater to the needs of such users, the design of Blue2 significantly highlighted the buttons for use, two large buttons facilitate operations such as clicking, knocking and striking and the white and orange colours help users identify the buttons, the simple and easily understood shapes can guide the users to spontaneously use Blue2 in controlling iOS devices.