ECG is a quite mature product from TI or ADI and I think the trend is further reduce the cost and complexity or even lower power. Going SoC device may only be good for academic purpose rather than putting anything innovative. Anyway this article is good for new comer.
Thats quite true that readily available solutions are there but for academic purpose PSoC is a growing technology and it always helps this kind of article to make use of growing technology for some unseen betterment.
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.