In message , at 19:11:52 on Sat, 9 Sep 2017,
Graeme Wall remarked:

Shopping malls have been doing a similar thing to send you
"targetted
adverts" as you approach various shops.
How effective is this? Maybe I am unusual, but when I am shopping my
phone is normally in my pocket, so I would not see these adverts. Apart
from incoming (phone) calls, the only time I would look at my phone in a
shopping mall is when sat in a coffee shop or restaurant.

I believe it has only happened in the States so far

They had a trial at Bluewater really quite a long time ago. I can't be
bothered to look it up, but around ten years perhaps?
--
Roland Perry