You have been consulted by the mobile phone company Hookup about
a new augmented reality product called “Brows”. They want to
develop an alternative to Google Glasses, which, you recall, is a
proposed new product which plans to superimpose a whole range of
wireless Google services over the user’s ordinary vision of the
world. These appear in little circles and ovals, and let you phone
people, take photographs, navigate across cities and inside
buildings, find shops and update your social...