Question RFID card holder?

[brannsiu]

Hi all
I'd like to know, if any stainless steel or metal case is equivalent to those advertising RFID ?

or if RFID a special layer of coating on the metal or any other surface which could protect the credit cards from being read?

 

[Dark Lord of Tech]

View: https://www.youtube.com/watch?v=Ukfpq71BoMo