It's always interesting to see what the Nintendo file says. Some are accustomed to meeting the additions we enjoy today – some never see the light of day – but the latest one is made public on January 16th which showcases a stunning variation of the Joy-Con fabric. According to the patent, when this special thread is attached, the HD rumble will react to certain objects on the screen and pressing the X button will result in a large line drawing on the switch screen. It's interesting to see what Nintendo releases and what to use, but in the meantime, check out the image below to get closer.