Uploaded August 2018 | Updated September 2026, 2 hours ago
To play detective like Batman, rub your finger on your nose or forehead, and press it carefully but firmly on a white comic book cover. If the comic is too big to fit in the jar, cut it to size. But if you don't cut it, you can actually reuse it afterwards, since this is a non-destructive visualisation technique. Simply drop the comic book into the jar of iodine and close the lid. In less than a minute, you will start to see a faint tan fingerprint appear. Wait a few more minutes, and the tan will develop into a nice dark brown that clearly shows the ridges of your fingerprint.
To play detective like Batman, rub your finger on your nose or forehead, and press it carefully but firmly on a white comic book cover. If the comic is too big to fit in the jar, cut it to size. But if you don't cut it, you can actually reuse it afterwards, since this is a non-destructive visualisation technique. Simply drop the comic book into the jar of iodine and close the lid. In less than a minute, you will start to see a faint tan fingerprint appear. Wait a few more minutes, and the tan will develop into a nice dark brown that clearly shows the ridges of your fingerprint.
