Sun got rid of your wireless network cable and USB cable … What can he do now? Well, the answer may surprise you: wireless shopping. There is a small army of uses for this technology, and many are in use at that time.
RFID electronic barcodes
Yes, that's right: RFID (Radio Frequency Identification) is a replacement for the barcode using radio technology. But what is wrong with barcodes, you ask? Now they have to be scanned,to begin with. Supermarkets and other stores have to do small armies of staff in their stores, in fact almost nothing, but to take the scanning of bar codes and money.
RFID allows bar codes are replaced with radio signals that can be scanned automatically. Theoretically, it Could be a cart full of RFID products, were found near an RFID scanner, and things in your shopping cart and summed Their prices immediately.
Imagine a car in front of bus stopto leave the supermarket, and nothing But put your credit card in a machine before you leave (if your credit card RFID-enabled, you might not even do that). You can checkout in seconds! This is a win-win situation: It saves you time and money is saved in a supermarket. The only people, the losers are those who paid for it to sit for the scanning of bar codes, but hey, this is the technology for you.
How the hell does it work?
Believe it or not, RFID tags contain smallAntennas, so that the transfer of small amounts of data via radio. Most of the tags in use today have no separate power supply (a power makes the largest tag and more expensive), that means clustering that rely on receiving power through the air via radio. It 's like a small amount of power that is just enough to transmit an ID number. This works, however, from five meters.
For commercial use, the tags are to send the numbers is enough – a barcodeis just a number in the form of lines, after all. These tags are now cheap, 40 cents, resources and mass production the price is low only arise – RFID is likely to spread over the next ten years. The smallest RFID tags are already thin enough to be almost invisible.
Privacy and other applications of RFID technology
There are privacy concerns the use of RFID, simply because they are so quick and easy to do all day – and the labels can be scanned without any humanInteraction. But this is also what makes the system very useful.
Pets are already using RFID tags, so they are identified, if it can be implanted, and had ideas of people to have implants to replace ID cards, RFID is not as science fiction as it sounds – it is now possible. Already in 1998, was professor of the situation, an installation day arm. The technology is used for prisoners considered. In countries that already, or ID cardsthem soon, RFID tracking probably will not wait long to arrive.
If RFID tags are things left for shopping, people could tag on their clothing or other objects left without realizing it. This has all the possible consequences will be – it could be someone in a position of an RFID scanner for your home number and get a list of everything a day longer, for example.
RFID is already widely used in many industries. Stores use them to track pallets of goods, put them in libraries, booksand airlines use them to track baggage. Its use is particularly common in building access control (identity cards for workers, the door opened automatically).
Travel is another growth area: many parts of the United States Have the ability to pay with RFID cards for the toll, and the London Underground now uses payment cards known as Oyster Card RFID. There is also the car keys to open the door, RFID, while They still in my pocket, without having nothing.
EnvironmentalRemember
As known to all of this could be many people concerned about the environmental impact of RFID. Although they are small, they can use computer chips to replace bar codes lead to the equivalent of many thousands of computers that are thrown Every year.
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