To add a bluetooth device to the FarmITMobile app you will need to establish a connection (pairing) between the devices, this is done by opening the bluetooth settings on the device (usually under settings) once you have your devices paired up go to settings/EID Reader from here you can configure the bluetooth devices to connect to the FarmITMobile app, select the devices from the dropdown lists and select the type of device they are, once the boxes are correctly filled in press the set button to save the setting. When you have a device set up in the setting whenever you see these bluetooth buttons click on them to open a connection to that device, the devices will be connected when the bluetooth button turns blue as shown above, .