ISO 14443 is a four-part contactless standard consisting of physical card characteristics, radio frequency power and signal interference, initialization and anti-collision and transmission protocols.
The operating frequency defined in this standard is 13.56 MHz, providing a read range up to 4 inches (10 cm).
There are two "flavors" of ISO-14443: Type A and Type B. Although originally meant to serve different functions, both Type A and Type B are now microprocessor standards similar in function. However, ISO 14443A is the more commonly used technology, while Type B is used primarily in banking applications.
Due to faster data speeds, 14443 technology is recommended for applications in which extensive amounts of data, such as large biometric templates, need to be transmitted.
Anticipating an increase in data-intensive applications requiring high data rates, the U.S. government recently selected ISO-14443 as its official standard.
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