OMG! Do you trust your scanner/photocopier?

[focus]

Check this out.
http://www.dkriesel.com/en/blog/2013/08 ... n_scanning

Are you sure that only Xerox products affected? Maybe other vendors are doing something like this?
As i know, DJVu file format have similar approach like JBIG2.

[Jiffy]

Imagine if it put the numbers '69' on something extremely sensible.

[focus]

I imagine, if my, say $60000 in bank account turn to $80000.
Or, if when i print electronic ticket, flight FLIGHT-606 at 16:06 16 OCT 2013 switches to flight FLIGHT-808 at 18:08 18 OCT 2013.

Here, one guy complains that he had similar problem, when he printed electronic ticket for railway out of PDF file. Some symbols and numbers have changed.
http://rsdn.ru/forum/life/5261546.flat

[focus]

Oh no. Copiers are even more dangerous, than i thought before.
They log everything that passes through them.

Watch.