An RFID reader and writer is a device which can read and write to RFID tags. Available in a wide variety of forms, from fixed readers, able to read a number of tags travelling through an entrance (e.g. on a pallet) to Windows based handheld computers with built-in RFID readers.
As stated in the previous blog post (RFID for Beginners), RFID systems generally operate at three different frequencies. These are low frequency (LF), high frequency (HF) and ultra high frequency (UHF). There are advantages and disadvantages to all of these frequencies.
So you have heard of RFID but you dont know exactly what it can do. Below is a quick guide on what RFID is along with some advantages and disadvantages of using it to track your products.