Currently mobile app does not support reading RFID tags. Many mobile terminals, running on Android have RFID reader built in. One example of the RFID reader is Zebra mc339r, running android and with RFID reader, but there is no way to utilize that technology on the mobile terminal at the moment. In addition, there are many other vendors offering RFID mounts for existing terminals, phones, or tablets.
Acumatica mobile app should be able to utilize the RFID technology and allow to read RFID tags, search for all nearby tags (Inventory IDs/Lot/Serial numbers), and locating the specific tag using the information from Acumatica.