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| Shanghai 2010 World Expo tickets used in its RFID technology, the complete elimination of the fake tickets problem. You might just see the "RFID" on the first four letters dizzy. Wake up before, in fact, is no stranger to this stuff Zan, in access control cards, bus cards and even some food the use of meal cards, RFID applications are in daily life. RFID or radio frequency identification (technology) commonly known as "tag", you can understand it as a more advanced bar codes. What are its advantages? First, the bar code reading device to being close to read the data, while the RFID without being right, penetrate coverings, can read the data range. Second, the bar code information only to provide simple, once printed can not be changed; and RFID information stored in high capacity, and can be rewritten at any time. Again, bar code easily be tampered with or forged, but RFID can not be forged and can be encrypted to prevent tampering. In addition, RFID can read multiple tags at the same time, read speed is quite high. Today, the United States, Wal-Mart has the full realization of the pallet-level RFID-based logistics, and asked its suppliers to use RFID tags. Did not achieve item-level RFID-based, non can not and indeed "could not afford" also. It is estimated that by using RFID, Wal-Mart could save 8.35 billion U.S. dollars per year, mostly due to purchases of bar code does not need manual see labor cost savings. It can also solve the problem most of the theft. Wal-Mart a year now due to the loss due to theft of nearly two billion U.S. dollars, which is equivalent to 700 U.S. companies ranked in the annual turnover. Passive RFID prices low, use convenient, because the reader only by reflecting radio waves to work, the range of 10 meters. Active in the RFID itself may emit electromagnetic wave, can be used in long distance, and more for vehicles, electrical equipment, train, field facilities, etc. can not close or supply a difficult environment, but also as a positioning purposes. Minnesota U.S. prison serving a sentence on the use of active RFID management, may be observed through the computer's activities, each serving a sentence does not sound like Harry Potter --- "living point of the map"? The question is, The system is said to equal shares to pay for equipment for each prisoner to 30 thousand U.S. dollars ... ... RFID is how to achieve security and information safe? First of all, because the technical threshold is too high, only a few suppliers can provide the core of RFID chips. Although this resulted in technological monopoly, but also to prevent the counterfeit and shoddy products. In addition, each RFID chip has a unique ID number of curing, by ID number can determine the chip's "identity." Thus, at least today's RFID tags do not appear fake. Chip can not be false, how to guarantee that the information security? In the chip, there is a client data area can be written to access your password. Second, only stored in the RFID in binary code, The user data stored in the PC and the external database. If you do not know the meaning of the code, or can not connect to the database, it would not have access to information. Italy's Tuscany vineyards and now the Chinese Maotai, they were talking to cover installation of RFID tags in the bottle security, you can identify the authenticity of the dealers and the year, once the open end, the label is automatically null and void. No perfect things, RFID also has its own flaws. RFID to rely on electromagnetic waves, but waves can not penetrate metal and liquid, the reflection of electromagnetic waves caused by metal shielding, and the fluid will absorb electromagnetic waves. Frustratingly, most of all metal containers and machinery and equipment, but most of the animals living in water content are very high. Therefore, use of RFID tags for cattle, are plug-in in the ears of cattle, rather than cattle in vivo implantation. Now, many companies have been dedicated to the production of metal RFID tags, which structure is behind the label of a thick insulating pad pad, protruding from the chip surface of the metal surface, Be a transition period right product.  Tickets for 2010 Shanghai Expo will be embedded RFID antenna in the production process, from Xiamen, CanRise printed automatically detect a 100% automated inspection system. |
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