The growth leads to the depletion of natural resources of the planet. One of them is wood. We use unnecessary paper! Too much mess! Beware of CO2 imbalance... The immediate solution to stop destroying forests: dematerialization of exchanges with legal convincing value. Zero paper! The electronic originals are sealed and encrypted in a nominative and communicating electronic safe. The identification of counterparts is made via Magicaxess, a new high tech of identification WITHOUT having to download a digital certificate!