Apple’s recent announcement that iOS 13 includes full support for near field communications (NFC) suddenly makes the infrastructure for NFC far more complete and widespread. Now that just about anyone with a smartphone can read and write to NFC connected tags, it’s time to start putting NFC to broader use in the factory, the field and at home.
NFC functionality is added to a smartphone using an IC called an NFC reader. The NFC reader can be configured either as read-only or read/write. With read-only functionality, the smartphone can only read data in from an NFC tag, but with read/write functionality, the smartphone can both read data in from a tag and also update the tag with new data.
The drawback has been that, for some time now, full read/write NFC functionality has only been available on smartphones that use the Android operating system. The Apple iOS supported NFC as a read-only function. Not being able to predict which users would have Android smartphones once a product left the controlled environment of a manufacturing plant created a barrier to entry and slowed adoption for NFC in applications that make use of full read/write NFC functionality.
In September 2019, Apple changed their approach to NFC and began supporting full NFC operation with iOS 13. Now, any iPhone that runs iOS 13 can both read and write to a variety of NFC tag types including NFC connected tags.
Connected NFC tags are chips that can be directly mounted onto the printed circuit board (PCB) of an electronic unit, so as to embed the NFC tag functionality directly into the unit. Connected NFC tags are the easiest and most cost-effective means of adding an NFC interface to any electronic device so it can communicate with NFC-enabled smartphones and tablets.
The NFC antenna is formed by traces on the PCB, so the only additional cost beyond the NFC tag is the PCB space. Like other NFC tags, connected NFC tags can be read and written without being directly supplied with power. The power harvested from the NFC field is sufficient to support read/write operations.
OEMs can add NFC tags to their products knowing that NFC is now supported by a solid smartphone infrastructure and consumers can be confident they’ll be able to use their smartphones to interact with any products they buy that have NFC inside.
As the co-inventor for NFC and a leading supplier for NFC technologies, NXP offers a complete portfolio of NFC tags. In addition to the well-known standalone tag format, which can be attached to virtually any object, we offer connected NFC tags, which are designed to be part of an electronic system.
NXP’s NTAG I2C plus family, now in its second generation, makes it very easy to add tap-and-go connectivity to just about any electronic device. All our connected NFC tags are supported by a full selection of development kits and demo kits, so engineers can explore functionality, get inspired and trigger their creativity.
To learn more about NXP’s connected NFC tags, visit NXP’s NTAG I2C plus explorer kit.