Certainly an IR style sensor would be good for low-light recognition in a way that using a CMOS image sensor would not.
But one wonders how necessary gesture recognition would be for handheld devices. The use case in television and other more remote equipments is more obvious.
I wonder if the real reason for using IR is that it can obtain full illumination in light or dark without annoying the human user. A bright light coming from the sensor would be annoying - especially if people intended to be viewing a screen in the dark.
Sounds like a neat idea, I am left wondering about the details. What is the range, resolution for the sensor arrays and how much processing power is needed to support the gesture recognition? I would like to know more (please).
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Are the design challenges the same as with embedded systems, but with a little developer- and IT-skills added in? What do engineers need to know? Rick Merritt talks with two experts about the tools and best options for designing IoT devices in 2016. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.