Strange vibration/mild electrical current on MBP casing?

[neoelectronaut]

Just received my 2016 MacBook Pro a few days back and I'm finally getting a chance to futz around with it.

My girlfriend pointed out that if you take a finger and place it on the wrist rest area and move it across the surface the computer mildly vibrates, or perhaps it's a very mild electrical current. Does anyone else's do this? Should I be concerned?

 

[therealseebs]

That is a super common thing with metal-cased electronics. I have forgotten the fancy name, but as I recall, it is not a result of "bad grounding", despite lots of people saying it probably is on the Internet. It's a weird electrical field effect, and should be completely harmless.

 

[pshifrin]

My 13 inch does exactly the same thing but I'm not concerned because of what people have written here.

 

[A11]

My 15 inch has done this for years now. It is harmless, I asked Apple Support and they said that it is because of the laptop being built out of a metal casing. It is harmless, just a weird feeling.

 

[Timmy D]

This happens on an iPad as well no big deal