I have heard about cases solved by tracing certain people through pings. I have not heard about a single case solved by checking randomly all the pings in the area. Do you know such a case?
In Joana Yeates case, which is one of the biggest in modern British history..
I don't understand what you mean checking all the pings..
You check the pings at the time of the Smiths sighting and at the place of Smiths sightings.
Also pings at OC between 8.30 and 10pm
You don't check these types of data manually, there are computer programmes for analysing data.. easy job! One man enough!
And another case is of a missing Antonia Bilic in Croatia.. also the biggest case in history for that country..the killer was found through the mobile phone checks. He was driving a truck with Antonia onboard and Antonias mobile was pinging different towers.. police noticed another number pinging the same towers at the same time and then gusto! This is how they caught him.
http://daily.tportal.hr/229204/Experts-say-remains-belong-to-missing-Antonia-Bilic.html
Also in this case in Croatia, which is also a tourist country police knew withing few hours where was the last ping of Antonias phone..
Why Amaral could not concentrate on something material like that, instead of concentrating on rubbish theories?