I just noticed Caroline putting on some nail varnish, which she acquired via Amazon. One coat goes on thinly and is allowed to dry, then next coat goes on thick and you hold the magnet over it.
I was reminded of a scene in Total Recall when a receptionist, in the office of the company selling those holiday experiences, was touching some kind of stylus to her nails and instantly changing their colour. I wonder how long it will be before that is a reality? See, advancing technology (well, innovation) is not all about I-phones, E-readers and and how big your RAM happens to be.