Friday, August 7, 2009

Radio Frequency Identification RFID)

Radio frequency identification (RFID) is a generic term that is used to describe a system that transmits the identity (in the form of a unique serial number) of an object or person wirelessly, using radio waves. It's grouped under the broad category of automatic identification technologies.

Radio-frequency identification (RFID) use an object (typically referred to as an RFID tag) applied to or incorporated into a product, animal, or person for the purpose of identification and tracking using radio waves. Some tags can be read from several meters away and beyond the line of sight of the reader.

Auto-ID technologies include bar codes, optical character readers and some biometric technologies, such as retinal scans. The auto-ID technologies have been used to reduce the amount of time and labor needed to input data manually and to improve data accuracy.

Most RFID tags contain at least two parts. One is an integrated circuit for storing and processing information, modulating and demodulating a radio-frequency (RF) signal, and other specialized functions. The second is an antenna for receiving and transmitting the signal.

There are generally three types of RFID tags: active RFID tags, which contain a battery and can transmit signals autonomously, passive RFID tags, which have no battery and require an external source to provoke signal transmission and battery assisted passive (BAP) which require an external source to wake up but have significant higher forward link capability providing great read range.

Managing Your Money

Whether you earn a little or a lot, it’s always wise to budget and plan your finances smartly. Common mistakes that most people would make when it comes to money is getting too deep in debt, paying bills late, and not knowing how to save for the future. You can avoid making these mistakes by always keeping track of where your money goes and knowing what you can spend on.

Here are some steps that you can use for managing your money wisely:

1. Step your financial goal.
2. Know where your money goes to.
3. Assess your spending habits.
4. Write down your spending plan.