On linking with the property it says: "Since most people already have an Aadhaar number, asking them to link it to their property documents is a better option. The main advantage of this strategy is that the tax authorities will get details about ‘legal owners’ (owner as per property documents) immediately. Several historical property deals might have happened in fictitious names and they will get stuck immediately. Several black money hoarders also used to register properties in other’s name (eg in the name of servants, family members who are poor, etc) after getting their signatures (these poor people have no idea what these signatures are meant for).