The Bluetooth wearable device can include a single ring which fits over the user's thumb or other finger. The wearable device interfaces with specialized software to provide two primary functions. First, the ring in combination with specialized software maps the rest of the user's hand in order to take input from fingers that are not currently wearing a device. Two contact points touch the screen of a device and conduct the electric current along the user's skin to interact with a capacitive screen. Second, the ring acts as a broker to connect a paired device with a touchscreen device. Between the twin contacts is a color sensor. The software on the touchscreen device displays a color to indicate how the devices should establish their connection. Using this information, the ring initiates the connection.