With all due respect people, this is nothing new. This cooking technique has existed for over a hundred years. It is called egg coddling. Egg coddlers are cookware that are used to coddle eggs and have existed for a very long time. Traditionally, the egg is cooked to a soft boiled status, but are cooked to hardboiled status as well as adding herbs, spices, cheese, meat or other ingredients.
Egg coddlers are traditionally made of china or other similar material with a metal lid. They are placed in a pan of water and the water is brought to a boil on the stove or in the oven. They are also placed in a dry pan with water already at boiling point poured over them and allowed to sit until cooked to the desired doneness.