Before you start this, please ensure you have paired your reader to your mobile or tablet. The code is often 1234 when you pair the phone and the stick reader.
Go to the "Settings"-screen in PigVision mobile by clicking the icon in the red circle on the picture below:
Choose "Use RFID":
A new screen will then be shown:
The device may beep to show connection is successful and it should also tell you on the screen that it is now connected.
Close down PigVision Mobile Sows completely, open it again and synchronise.
If one stick reader will be used on several phones you follow the same guide.