This is an interesting development indeed. I can see a mechanical pump extending the buttons when a cover is opened, which would not consume any power at all. That might be the best way to make it work. But it seems that the whole system life would be much shorter, meaning the phones may not last the complete six months to their intended obsolescence, which would mean that the makers would need to shorten the warranty time a bit. And anybody who is such an impatient jerk that they can't wait a few seconds for the buttons to extend should be sent back to using a rotary dial phone.
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.