> It's pretty easy to verify if the page contains nothing but an image, programmically, especially if you also wrote the software that rasterize it in the first place.
It's pretty easy for a computer to verify any of this, the point is making it idiot proof. You don't have to be much of an idiot, if you process hundreds of documents a year where there's no way to visually verify the difference between a badly redacted document and a well redacted document, to screw up once. Especially when the difference between them is that you remembered to push the "redact correctly button", and if you forgot that, remembered to push the "verify if is redacted correctly programmatically" button before hitting send.
What you do is create a ritual where you have to walk across the room and use a physical machine. You'll remember doing that. And if you don't, since the output will look a bit crap, you can confirm it trivially.
Creating a process that has to be done perfectly every time or it fails catastrophically, and has few indications of failure during the process, is worse than having no process at all.
