I have never tried this before so I cannot vouch for the truthfulness behind it, but apparently Adobe Photoshop will recognize currency and prevent the user from being able to manipulate it. This makes perfect sense because of the power of Photoshop and the number of professional editors that use Photoshop. It will also recognize credit cards and Euro notes. If any of the above is recognized then Photoshop will prompt you saying that it does not support “the unauthorized processing of banknote images”. Pretty soon they will have Photoshop recognize convicted criminals and when they try to change their image in Photoshop then it will alert the Police (that is just my thought though based on this article :D).
News Source: The Unofficial Photoshop Weblog