That situation, was hurry up to Sainsbury’s, wrote down notes on sticky, put into
pocket, arrived there then either forgot where it was, neither lose it on the way..
Interactive – Users can choose what they like to add to key holder if it can be production.
Interface – Users can write anythiing, it could be family’s birthday or anything.
Functional – Key holder is always movable but not wearable. Simple and can be using nature energy for the extra design..

