A substantial part of the rules governing land tenure and its conveyance has had the prevention of fraud and double-dealing as its object. Rapacious vendors have perfected the skill of selling the same piece of land successively to more than one purchaser. Trespassers have brazenly taken possession of land in which they have no vestige of interest, challenging the owner and asserting limited or absolute rights to it. Some of these frauds are perpetrated because land transactions are not publicised. It is no surprise therefore that the elimination of secrecy in such dealings was appreciated early in man's history.
The oldest recorded land transaction, which took place almost 4,000 years ago in 1881 BCE in the Middle East, was concluded in the presence of witnesses, “before the eyes of the sons of Heth among all those entering the gate of his city”. Witnesses give the transaction publicity and they are also people who could testify to it. But the testimony, useful as it is, has its shortcomings and cannot always be relied on to determine either whether the transaction took place or the nature of the rights and obligations it conferred on the parties. With the passing of time the frail memory of the witnesses fails; on their death any evidence given becomes hearsay with the attendant possibility that subsequent persons may alter what they were told.