4 ms·
Print on paper. Physically cut out the pieces you want to send to remove. Scan. Still suspect that someone can undo this from data may have been accidentally s
by KnuthIsGod 10mo ago
Print on paper.
Physically cut out the pieces you want to send to remove.
Scan.
Still suspect that someone can undo this from data may have been accidentally steaganographed across non-deleted parts of the image.
- hexfish 10mo agoNot sure but that might actually add your printer's unique dots to the scanned image. https://en.wikipedia.org/wiki/Printer_tracking_dots https://en.wikipedia.org/wiki/Printer_tracking_dots
- fodkodrasz 10mo agoMicrodots may leak your identity this way (though I guess a really high resolution scan is needed for that)
- immibis 10mo agoIt's no problem if they leak the fact that an FBI office printer was used to print the documents the FBI released.
- arendtio 10mo agoI think even after printing and scanning there could still be jpg artfacts from the original (e.g. if you scan lossless). However, I wonder whether heavily compressing the redacted image would help remove any unwanted artefacts. But the best solution is probably to render the original file from scratch, without compression, before redacting the image.
- deleted 10mo ago[deleted]
- empath75 10mo agoYou can also make guesses from font/typeface kerning if it's not from a typewriter.