Q. With reference to Radio Frequency Identification (RFID), consider the following statements:
1.The tags can carry encrypted information, serial numbers and short descriptions..
2.Passive RFIDs use their own power source, mostly batteries for their application.
Which of the statements given above is/are correct?
Radio Frequency Identification (RFID) is a wireless tracking system that consists of tags and readers.
Radio waves are used to communicate information/identity of objects or people to nearby readers – devices that can be hand-held or built into fixed positions like poles or buildings.
Statement 1 is correct: The tags can carry encrypted information, serial numbers and short descriptions. There are also high-memory tags like the ones designed for use in the aviation industry.
Statement 2 is incorrect: Active RFIDs use their own power source, mostly batteries. Passive RFIDs, on the other hand, are activated through the reader using the electromagnetic energy it transmits.
Active tags have a longer read range, around 300 ft, compared to passive tags.
Source: Indian Express
