what is near field communication nfc 
near field communication nfc is a short range wireless technology that makes your smartphone tablet wearables payment cards and other devices even smarter near field communication is the ultimate technology solution for connectivity with nfc you can transfer information between devices quickly and easily with a single touch whether paying bills exchanging business cards downloading coupons or sharing a research paper understanding near field communication nfc near field communication transmits data through electromagnetic radio fields to enable two devices to communicate with each other to work both devices must contain nfc chips as transactions take place within a very short distance nfc enabled devices must be either physically touching or within a few centimeters of each other for data transfer to occur because the receiving device reads your data the instant you send it near field communications nfcs greatly reduce the chance of human error rest assured for example that you cannot purchase something unknowingly because of a pocket dial or by walking past a location that s embedded with an nfc chip called a smart poster with near field communication you must perform an action intentionally in fact even after nfc technology becomes universal users may still need to carry a backup payment method you cannot do much of anything with a device whose battery is drained whether this would be a permanent downside to nfc technology however remains to be seen as with any evolving technology retailers need time to ramp up their equipment to be able to process nfc transactions so for now consumers should still carry cash or payment cards 