@Junko -- now you have me doubting myself -- I just did a search and found this article http://pingmag.jp/2008/03/13/taxi-lights/ but this is totally different -- maybe someone in Japan was having a joke with me when they told me about these lights
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. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.