green screw

I've been toying with ideas around making products more easy to separate for recycling.  Many products have too many hidden clips etc. What if on the back of a product, one green annodised screw denoted that by undoing it, the whole products constituent parts/materials would be easily separated.  Designing with this in mind would bring about different aesthetics.  Rather than try and hide the methods of fixing, we could make them a feature of the design.  A friend read this and pointed out that it wouldn't work on a car! I had had smaller electronic devices (radio's, mobile phones, TV remotes) in mind when I was musing.