With the rise of digitalisation, the amount of transactions you can do on Internet has been growing exponentially. So has been the need for trust. Online trust depends merely on two conditions: to prevent fraud, we need to prove that we are the person we pretend to be. And then we need to prove that we can meet our part in the contract (payment, delivery,...)
From certificate chains to social rating, a lot of solutions have emerged over time in this domain. But each company, each actor, is setting up its own strategy in a separated way. As a result, we end up dealing with endless amount of passwords and accounts. Initiatives are emerging to simplify this and to build trust between services. People can for example login to many websites using their Facebook or Google account.
But this is not secure, and not fair. The more we mutualise our accounts, the more we feed vast databases. And behind them, we supply machines controlling what advertising we see, what news reach us, who are our friends... Databases that can sometimes get attacked, creating gigantic data leaks and related fraud.