Here's a story about tracking & tracing...I've been doing it for years ! About two years ago I sold a mobile phone on ebay, it was in excellent condition as my stuff always is and as I only switch on a mobile on when I want to use it, the battery was in good health too. A lady had purchased it and on receipt of said phone messaged me back to say how pleased she was with it, good news.
Then things got a bit odd...
Twenty four hours later I received a message from the purchaser asking if I had another phone like the one I'd sold her as hers was now gone ? I told her that was my personal mobile she'd bought so I had no more, but then went on to ask what had happened to mine she had.
She told me it had just disappeared gone, that was it so I messaged back again inquiring what she meant by 'gone'
She told me it was on her desk then the next minute it was gone, so I wondered if she'd mislaid it or maybe she was just crazy. This is a long story so i'll cut to the chase, I was determined to find out where her phone was so I set about using all sorts of technology I can get my hands on. I should point out at one time I was heavily involved in mobile phone firmware technology & reverse engineering so I know how a phone works.
I located that phone, in fact I even found the house it was sitting in and got a Google image of the place. Even though it had been tampered with I still tracked it down. I then messaged the buyer and asked if she had a friend or relative who lived at this house, she replied it was her sons place...Ahh. I advised her to look no further for her phone, that's all I said to her.....she never replied again.