A young man in China, while chatting with his wife, mentioned that he would like to purchase a computer mouse. Unexpectedly, he started seeing advertisements recommending different types of computer mouse on his cell phone that day. Was his phone spying on his conversation?
He decided to put it to the test. He checked his wife’s cell phone and found that all the recommendations were for clothes. He then mentioned different types of refrigerators near her phone—which were not on her usual recommendations list.
