Turning a deaf ear towards electrical noise

Electrical Noise is not a problem that will disappear anytime soon. It comes from a variety of sources and is characterized by unwanted Electromagnetic-interference (EMI), power line glitches, static discharges and other effects. A majority of complaints about noise sources are through the power lines.
The best way to prevent destructive power glitches from getting to sensitive digital components is through Galvanic Isolation. Some HMI platforms do not have this isolation and depend on the device providing power to the HMI to filter out these disturbances. However, when cost is an issue, applications sometimes have the cheapest power supply available. These inexpensive power supplies don't always provide the best filtering. The result is erratic HMI performance or early HMI failure.

So, next time you are looking for an embedded HMI product. Be sure to check that it has Galvanic Isolation. (Google Galvanic Isolation to find out more about Galvanic Isolation techniques.)