Peter White goes in search of those who monitor how we spend our money, where we travel and the state of our health, while remaining unseen themselves. Peter meets the unseen bank staff who spend their days watching our spending habits and alerting us to possible fraud when our usual spending patterns are broken. He then uses his bonus points card at a supermarket, which prompts him to question who knows what about his buying habits and how this information helps analysts to persuade him to spend more, by targetting him with tailor-made and tempting offers.