• what3words addresses are accurate to 3m x 3m, enabling them to specify a precise entrance, unlike a street address which identifies an entire building.
• They are all unique, unlike street addresses which are often duplicated – there are 14 Church Roads in London alone.
• They cover everywhere, enabling people to easily communicate locations with no street address – parks and beaches, for example.
• They can be used in over 40 languages, while street addresses only exist in the local language. 
• They already exist for the entire world and are fixed so they never need updating. Street addresses have to be allocated, and the databases require constant updates as cities develop.