Faster Data Transfer With Bluetooth and Contactless Communication
By Christine Dorffi on Jul 27, 2009
NFC is a radio-communication standard that enables wireless data transfer between two devices at a very short distance -- less than 10 centimeters. NFC devices include a certain class of radio-frequency identification (RFID) tags and contactless smart cards. NFC devices operate within the 13.56 MHz frequency range, and they support extremely low data rates -- a maximum of 0.42 Mb per second.
Compared to Bluetooth and Wi-Fi, NFC technology operates at drastically reduced transfer rates and only within a very small proximity. If that's the case, why use NFC technology? Three reasons:
- Setup time. NFC devices communicate instantly -- in less than 100 milliseconds -- when placed within range.
- Power consumption. NFC tags and cards do not consume power, so their lifespan can be unlimited.
- Cost. NFC tags and cards are inexpensive to manufacture compared to other wireless technologies.
This article shows you how to get Bluetooth applications to completely bypass the device-discovery and service-searching processes simply by using Near-Field Communication (NFC) technology and JSR 257: Contactless Communication API.Read the full article