RFID or Radio Frequency Identification is a continuously evolving technology which has made its foray into our lives from the inner circles of science quite quickly. It is basically one of the automated identification methods like bar codes, smart cards, etc. which assists in identification of items. This transmitted data can have information regarding the location of the label, or details concerning the product labelled. The system also contains an interrogator, which has a particular range in which it finds the RFID tag, activates it, and receives the answer.They take advantage of the electrical current induced by the radio frequency signal to transmit their response. Moreover, they are the cheapest among the three kinds and so, most widely used. The semi-passive or semi-active RFID tags have a small battery inside. Hence, they are somewhat quicker in responding and collating information compared to passive tags.
Other than this, their size and scope are quite like the passive tags. The active tags have their own internal power supply. Thus, they are larger in size and have a larger memory size with the ability to communicate with their subscribers despite large distances between them. However, they are the most expensive of the three variants. Hence, so far, their use is quite restricted.The Standard role of RFID reader would be to communicate with the RFID tag by emitting radio waves via its antenna. The RFID readers are categorized on the basis of the range including UHF, HF 13.56 MHz and microwave 2.45 GHz. Their range also modulates the costs of these readers. Therefore, the UHF readers would be the costliest and their costs range anywhere from $2500 to $3000.
The main reason why those readers are so expensive is because there is absolutely no IC integration and also due to its low volume of production and the non-availability of customized components. But, according to a new forecast by a research firm, the costs of UHF readers are sure to fall at the end of 2006 or in 2007. This is because as an increasing number of sellers will invest in this technology and since the demand levels will raise the component prices will collapse.Thus, rfid singapore is a technology with a bright future and is capable of benefiting the mankind.