By Jo Best, 16 April 2004 16:55
RFID? Go on then, what does that stand for?
It's short for radio frequency identification.
And what is it?
RFID chips are tiny microchips (smaller than a grain of sand) with antennae on them. The chips can transmit a unique code or other data to an RFID reader without touching it, via radio transmission.
And why would I need one?
Most commonly, they turn up in retailers' supply chains, working like electronic barcodes. They're stuck to pallets, crates, cases and even individual items of stock. Then, instead of having to employ someone to count stock, you wave an RFID reader near the tag (the chips can typically be read up to a range of about 10 feet away) and – hey presto - it does all the counting and stock identification for you.
Sounds handy. Shops must be going wild for the chips...
Well, yes and no. Some major chains like Wal-Mart, House of Fraser, Marks and Spencer and Tesco have trialled RFID. Some, like Wal-Mart, are mad for the new technology and intend to drag their suppliers along with them whether they like it or not - Gillette even went as far as slapping the tags on their razors, much to the chagrin of some shoppers - while others are less than enthusiastic and have steered clear of the technology beyond the trial stage.
What's the problem then?
It depends on who you ask. The biggest and most often cited obstacle is cost – the chips are just too expensive, according to most retailers, to put on every pallet, let alone every item. The tags cost upwards of 15p a pop and most retailers won't touch them with a bargepole until the cost drops to a couple of pence.
Fair enough. Is RFID just a retailer's thing then, or will we see it turn up anywhere else?
As tech's official Next Big Thing, it's pretty likely. RFID chips have done the rounds in supermarket loyalty cards, banknotes, on clothes and pharmaceuticals and there's even discussion about putting them inside credit cards and passports.
Passports? Does that mean shady government types can track my every move?
In a sense. Chips in a passport could be used to track the flights you've taken, for example, or even track your movements throughout an airport. The tags can only be read at short distances, so it's unlikely that Enemy of the State-style tracking is on the way yet - but retailers haven't exactly been doing their best to allay the fears of the civil liberties groups.
How so?
To stop the chips changing from stock control staple to surveillance tactic, the chips need to be disabled as soon as shoppers leave a store and the retailers need to allow consumers to opt out of having their goods tagged. One German supermarket put RFID chips in all their loyalty cards without informing shoppers and let the chips transmit even when shoppers had left the building. The resulting protests forced the supermarket chain to ditch the tags.
Microscopic tracking tags - it all sounds a bit futuristic. Is it all just a lot of hype?
Retailers and manufacturers don't think so. Wal-Mart and the US Department of Defense recently issued a mandate to all their suppliers demanding that they have RFID systems in place by 1 January 2005.
Analysts are also getting hot under the collar about RFID. According to the research firms, it's not so much a case of if RFID becomes ubiquitous, but when.
Comments
There are 6 comments. Join the discussion
1. Bob Gould
Maybe you don't RFID a big deal but here in the USA in the livestock market we find this a problem. Our government has already gotten a law in place where we will have to have the chips in our livestock. See http://usaip.info/ for more info. When all is said and doneThey want to know exactly where your animals are at ANY given time! In the long run take away our freedom to move our horses about the country. See http://ebarrelracing.com/articles/blog_roll.php?p=15
2. anonymous
If your readers want to learn about RFID, they should check out http://www.rfidexchange.com/rfid101.aspx. That page gives a one-page introduction to the topic, and there are also white papers, company profiles, application summaries and a forum where experts are available to answer any issues.
Hope this helps
Steve
3. Sandra M. Picard
How are they being used in Healthcare and for what specially and what would an infrastructure look like to support that functionality?
Sandra Picard BS RN
Bridge Medpoint Manager
St Francis Hospital
Columbus Ga.
706-320-2716
4. Joe H. Jiner
I just finished reading the comments concerning the RFID tagging of food animals in the United States. After readiing some of the requirements it seems that government is not concerned where the animals at all times but the tracking of where they have been and when they were there.
With mad cow diease, it would be great to know the history of that animal and track the others that were in the same locations. The government can not track the animal when they want it just doesn't work that way. It seems the individual that posted the comment is not familiar with how RFID works.
Comments like this create such a fear factor that the general public doesn't know what to think. And, when they do think, it is always negative.
Some how we need to educate the general public but that seems unrealistic since RFID won't cross the main stream for many years to come.
Joe H. Jiner
Dayton, OH
5. Ian Sweet
You incorrectly state: "The tags can only be read at short distances, so it's unlikely that Enemy of the State-style tracking is on the way yet"
At a recent DefCon in Las Vegas, "hackers" were able to read a PASSIVE RFID tag from 250 feet!!! using very rudimentary equipment.
Don't be fooled into thinking that [any] RFID tags are benign. In the "wrong" hands they could easily be used to wreck your life! Embedded in a Passport and/or Credit Card/s it's a bit like shouting out everywhere you go your full personal details...... Lead Lined Wallets anyone?
6. anonymous
You may or may not be aware of this but, If you place a RFID Tag directly to the inner ring of a DVD or CD (picture side) you will probably find that the detection unit will not read the Tag.
What is happenning is in the centre of the DVD/CD (on the recording side) there is a silver metal ring, that cancells out the signal, so if your company is about to invest in RFID and you deal with thousands of media discs then make sure you try before you buy.
DP.