If you are using highly paid programmers, you may find that you can free them up for other projects when you get data entry software. Some systems are so easy to use that operators can set up new jobs and maintain the system. The more important accuracy is, the more seriously you should look at professional data entry software. In addition to increased productivity, one of the major benefits of data entry software is error reduction. If your data is text that will be read but not processed further, then errors may not be important.
Readers can get the meaning from the context.
You also need to look at how much it costs your organization to correct errors. Usually, it is almost free if you catch an error at the time the finger is on the key and the eye is on the information. It is even more costly when the bad data has been propagated throughout the system and has to be corrected in more than one place. And don't forget those intangible costs associated with customer goodwill and lost business. They also provide double key verify capability.