As the name implies, the shelves in National Library will soon be very intelligent. It should be able to "sense" if books are on the shelf or have left it, and how frequent it has done it! This may not be something that impossible in this current era, but the interesting part is that it is a non intrusive solution.
When RFID technology arrived, many see it as an advancement over barcoding. We need to scan items individually, making sure the face of the barcode and be visually seen by the reader. Then we now have RFID which also need certain range and line of sight before the reader can "sense" it. The major improvement is that it achieves an "Invisible Force" when doing the reading and detection, which is far more non-intrusive to the humans using it.
After talking to an RFID expert, I realised that there are many challenges to achieve such a simple requirement using the RFID. The radio frequency emitted by the tags on the books are strong enough to penerate the paper and shelf thickness. The application of such a technology may not be possible when the items to tag are made of different materials, such as liquid which may be anti-radio frequency. As we all know, the Live Radio Station Air Broadcasting technology we have been using for many years, have problems of reception if blocked by tall buildings.
Other than working on the hardware technology of RFID, the subsequent challenges would be to get it integrated with its existing software applications and databases. Apart from the ability to charge up the Tags, which emits radio frequency signals to the reader, an intelligent software is also required to be put in place to determine which tags is who and when is the signal sent, and what is the timeout for a retry.
In conclusion, there is quite a lot of challenges, before this technology can take place successfully. This is good news that Smart Shelves RFID solution have taken a big step towards Trial. It is just a milestone to be recorded down in history, not something for us to celebrate yet. I believe this technological advancement needs both Hardware and Software solution tightly integrated to be successful. Its not just about hardware, but quite a big amount of work in software too.