RFID application development space continues to expand,Control Wristbands

　　RFID application development space continues to expand

　　1973 was a very pivotal year in the history of RFID development. The first two patents were approved in the United States, one for active RFID tags and the other for keyless entry systems. In the ensuing 20 years, RFID achieved rapid commercial expansion and widespread adoption in transportation, animal tracking, and various inventory-related applications in Europe and the United States. With the maturity of technology in the 1990s, a series of RFID standards appeared one after another. By the end of the last century, more than 1,000 RFID patents had been applied for worldwide.

　　Nearly 50 years have passed since RFID's first patent application, but its adoption shows no signs of slowing down, with leading market data provider Statista predicting that the global RFID market will grow from $20 billion in 2020 to 2025 more than $44 billion annually. In this article, we will introduce some popular applications of RFID technology today, discuss some technologies related to RFID development, and explore the emerging applications that will drive the future development of RFID.

　　RFID has been widely used in many fields

　　Depending on the carrier frequency and coupling method, there are three main variants of RFID, each with its own advantages that can adapt RFID devices to different application scenarios. NFC, as a subset of RFID, operates in the high frequency (HF) range of the RFID spectrum.

　　Three RFID variants.

　　In these three variants, the technology trend is that tags are getting smaller and the cost is plummeting, leading to the widespread adoption of RFID in a variety of applications. RFID and NFC are each geared towards different specific applications: RFID is item-centric, attaching an RFID tag to the item, enabling it to report its identity and other information to a computer network. NFC, on the other hand, has a very short range and is a user-centric technology that requires the deliberate involvement of the user to ensure that functions such as payments or building access are completed.

　　There are already tens of millions of RFID tags in use worldwide for a growing number of tasks, as shown in Table 2, which also identifies the most popular markets.

　　Cumulative sales of all types of RFID tags by 2018. (Source: IDTechEx)

　　Important Events Ensuring the Future of RFID Over time, NFC and RAIN have become the most popular RFID variants, and several recent developments have also driven their popularity, including: RAIN RFID was established in 2014 Industry alliance to promote the development of interoperable UHF RFID applications, thus paving the way for further development. The rapid growth of the Internet of Things has created a huge demand for data generated by embedded sensors, and low-cost RAIN tags can provide basic intelligence to more "things". In 2018, Apple announced that starting with the XR/XS models, all iPhones will be able to read NFC tags natively. With this capability already available in Android smartphones, NFC is estimated to be used in approximately 2.2 billion mobile phones now, and will continue to unlock its full potential as organizations continue to explore more and more applications. The advent of low-cost, chipless RFID tags, capable of storing information in printable resonators and delay lines, and their implementation in flexible substrates, will enable RFID to gain more traction in new high-volume, cost-sensitive applications adoption. These important developments ensure that RFID technology remains relevant in today's rapidly changing world, positioning it as a driving technology capable of supporting a growing number of applications.

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