Phones have cameras, have done for ages. Many have two,
a good one on the back, less good one on the front. I
propose a third, in the top of the phone canted at a 20
degree-or-so angle toward the back.
You ask why this is necessary, I'll tell you.
I have to work near young people, young
people use their
phones, a lot. If, for example, practical education
precludes the use of their phone for an hour or so, they will
subsequently take their phone out and do all the catching
up they need to. Unfortunately they attempt this while
walking and walk into either me, one of my freezers or the
A camera placed as described could display on a section of
the screen, the environment directly in front of them.
They may then avoid the person/item and possibly tag it
for use in the upcoming google maps for the insides of
Also useful for checking your speed while txt-driving.