RFID ★

Wal-Mart stores

I learn how Wal-Mart uses RFID tag in their business and save a total of 8 billion dollars!

The advantages of RFID:

no line of sight requirement
the tag can stand a harsh environment
long read range
portable database
multiple tag read/write
tracking people, items, and equipment in real time

The disadvantage of RFID:

expensive compare with bar code
bulkier, due to embedding of electronic components in the tag. However, with advanced techniques, it is possible to reduce the size, and weight of the tags to a large extent.

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National library board (NLB)

I learn how NLB uses RFID tag to develop an effective on-shelf tracking system.

RFID tags replace both the EM security strips and barcode
simplify patron self check-out/check-in.
ability to handle material without exception for video and audio tapes
radio frequency anti-theft detection is innovative and safe
high-speed inventory and identify items which are out of proper order

During the first week,i learn what is RFID and there are 3 types of tag:Passive tags,semi-passive tags and active tags! Basically RFID systems can be used anywhere around us,
from clothing tags,

to pet tags to key tags anywhere that a unique identification system is needed!

During lesson,MR cheng also show us the types of RFID tags and videos of RFID application.In addition,on Sept 18th 2009 ,there's news reported that dressings(SWABS and gauzes) at the KK Women's and Children's Hospital's operating theatre for women will be embedded with RFID under a pilot project.Read more!