Or perhaps more commonly to build a complete picture of you, including your movements, contacts and social network spanning decades, which will be sold on a grey market, so that companies can more easily exploit your fears and foibles to sell you things you don't need, and target your dreams for monetisation.

Even if no-one needs to discredit you, an entire history of you will always have value, and companies like Google, Apple and Facebook will have unique access to it.