4.Advantages and Disadvantages

4.1 Advantages

· RFID technology has radio contact, due to this it is fast and automated scanning technology.
· RFID technology uniquely specify object , for this it provides pointer to database entry for every object , i.e., unique, detailed history.
· Relative freedom from regulatory limitations.
· Well suited for applications requiring small amount of data at slow speed and minimum distance.
· Penetrates material well (water, tissue, wood, aluminum )
· It has good non-line-of-sight communication.
· It can transmit large amount of data more quickly than lower frequency.

4.2 Disadvantages

· RFID more susceptible to electronic noise than lower UHF bands, e.g. 433 MHz
· Shared Spectrum with other technologies – microwave ovens, TV devices , etc.
· Must orient antennas carefully
· Sometimes Range limited (due to scaling issues/wavelengths)
· There ,some time privacy problem.
· Chip difficult to build
· Expensive