March 2021
Intermediate to advanced
464 pages
13h 11m
English
IoT devices don’t always need a continuous wireless transmission across long distances. Manufacturers often use short-range radio technologies to connect devices equipped with cheap, low-powered transmitters. These technologies allow devices to exchange low volumes of data at longer intervals, and as a result, they’re well suited for IoT devices that want to save power when they’re not transmitting any data.
In this chapter, we examine the most popular short-range radio solution, Radio Frequency Identification (RFID). It’s often used in smart door locks and key card tags for user identification. You’ll ...
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