We didn't want it to get out in the flow with no human intervention.

NPR: On Screens, Familiar Images Of Terror Flash

By the mid-1980s new technology meant the codes could be read automatically by sorting machines with no human intervention.

BBC: Modern postcodes are 50 years old

In finance, standards can take years to define as working groups from banks, securities firms and depositories meet repeatedly to hash out what needs to be in a message and ways to make it machine-readable so the communication can be handled by computers with straight-through processing (STP) and not require any expensive, time-consuming and error-inducing human intervention.

FORBES: Connect