Detail Information about RFID is given in the standards. Different RFID systems, at HF and UHF frequencies for example, have different standards and implementations.
The RFID Handbook gives a good overview about RFID systems.
Hi Pranam,
Yeas, so stupid was the official declaration!
Namely your units(mostly fix installed) with contact to computer or the hand terminal are called reader!
These is the reason why you a reader need for writing ...
K.