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Jul 17, 2019 at 8:31 comment added Gregory Currie @AleksG Certain formats, such as JPEG, allow a thumbnail to be stored as metadata. So while you may be confident that you have scrubbed those pixels clean, there may be cached metadata that will trip you up. (As it did one celebrity who attempted to crop out nudity from a photo they posted, unsuccessfully)
Jul 16, 2019 at 8:24 comment added Luaan @AleksG ... and with proper covering so that you can't see the card through the envelope (there's special noisy covers just for that purpose).
Jul 16, 2019 at 1:16 comment added Gregory Currie Or, just go there in person.
Jul 15, 2019 at 22:37 comment added Aleks G True, although the simplest one of scanning to an image, then painting black pixels will usually work.
Jul 15, 2019 at 22:36 comment added Keith Thompson And if you send a photo by email, some methods of blacking out parts of it can leave information that can be recovered.
Jul 15, 2019 at 22:31 comment added Aleks G @KeithThompson yes, that works with too. With the right bits blacked out. And send by registered post with proof of delivery required.
Jul 15, 2019 at 22:20 comment added Keith Thompson Or print the photos and send them by snail mail.
Jul 15, 2019 at 20:57 history answered Aleks G CC BY-SA 4.0