Here the objects could be anything, it could be a book in a library, any item which you are purchasing from the shopping mall, inventory in the warehouse, or maybe your own car. Not only objects it can be used to tracking the animals as well as the birds.
In this technology for inventory and warehouse management, the RFID tags used to get attached with the object which we want to track. This RFID reader is continuously sending the radio waves, so whenever the object is in the range of the reader then this RFID tag is used to transmit its feedback signal to the reader.
It is nearly similar the technology which is used in the barcode. But in case of a barcode, the object and the scanner should be in a line of sight. As in the RFID, technology is not a line of sight technology so far as this object is in within the range of the reader, the object is able to identify the reader and it is able to send a feedback signal back to the reader.
Using the RFID technology we can track the multiple objects at the same time.