any device, or a device of an unknown type
a camera (still or moving)
a computer, can be a laptop, a wearable computer, etc.
a display
headphones (covers two ears)
a headset (usually a hands-free device)
a joypad, joystick, or other game controller
a keyboard
a modem
a mouse
a network device, such as a router
another type of audio device
a telephone (usually a cell/mobile phone)
a printer
a remote control
a scanner
a drawing tablet
a toy or game
a video device, such as a webcam
a wearable computer
The type of a Bluetooth device. See also %BLUETOOTH_TYPE_INPUT and %BLUETOOTH_TYPE_AUDIO