He mentions that the braille can be printed on both sides, and implies the technique can be deduced from the scan, but I cannot see how it's done. (Perhaps the images are too small on my mobile device?)
Can someone shed light on how that works?
Can someone shed light on how that works?
A blind person can only feel the dots on one side, but it would be possible to decode both sets visually.
It's conceivable that the dots could also be just raised blobs, which would not be evident on the reverse side.