According to the technology blog AppleInsider, some users found that Apple's recently released iOS system code library contains "Li-Fi" characters, which seems to imply that Apple will adopt Li-Fi visible light in future iPhone wireless transmission standards. Wireless communication technology to replace the current long-term use of Wi-Fi technology.
The LiFiCapability character appears in the iOS code (please click to enlarge)
Twitter user Chase Fromm found that starting with iOS 9.1, the "LiFiCapability" feature statement appeared in the statement on the compatibility of other hardware and software in the library cache file of the Apple iOS platform. AppleInsider confirmed this.
The working mode of Li-Fi visible light wireless communication is completely different from the traditional infrared remote control. The working mechanism of Li-Fi transmission is: after the data is modulated into a light source, it is quickly transmitted by optical signal, and the optical sensor receives the optical signal. It is then reorganized into an electrical signal.
Unlike TV remotes, Li-Fi uses visible light, and its data modulation is not visible to the human eye, which means that the ordinary lights in the user's hall can be used as data access points. In theory, the data transfer rate in Li-Fi mode can reach 224GB / sec.
Li-Fi technology is still in the experimental stage, but many companies are trying to commercialize this technology. At least one company, Velmenni of India, has begun testing the Li-Fi technology.
In addition to the introduction of optical communication technology in the field of software, in fact, Apple has also developed optical communication products in hardware. As early as 2013, Apple acquired a patented technology called "Optical Modulation Using Image Sensors", a sensor in the patent that converts between image capture and data capture modes, allowing for the addition of no additional hardware. In the case of optical communication. Apple envisions this particular system for indoor use, but overall, the patent is also a high-bandwidth application.
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