The proposal is based on trust relationships in such a way that those who want to use it first have to authenticate it in the platform through some social network such as Facebook, Twitter or Google+. In this way, the proposal checks the existence of some chain of trust between the applicant and other users, based on the so-called rule of six degrees of separation . This rule is the theory that everyone is six or fewer steps away from each other person in the world, so that a chain of ’a friend of a friend’ statements can be made to connect any two people in up to six steps.