RFID stands for Radio Frequency Identification and is a circuit that gives a signal in the presence of a radio wave . This signal can be read/detected by a suitable reader .
The tag is affixed by using a special bio compatible glue .
The RFID tag is specially designed for high temperature environment and is designed to withstand steam sterilization .
The RFID tag has a life of 1000 cycles .
The RFID tag does not need line of sight . Since it is gives a radio signal, line of sight is not required . If the tag is soiled, in such a case too the signal will be active and the tag will be detected .
No the tags are very light in weight and will not alter the balance of the surgical instruments .