Brickset is reporting that there is in fact a way to pre-determine which figure you will get without opening the bag, but its not by feeling around for the contents.
Supposedly, there are two bar codes on the back of the package. Let's take a look...
It looks like the bar code on the right, the one without numbers, is the one that identifies which figure is inside. This only makes sense for inventory purposes to have such a system in place.
Already many are suggesting using bar code readers, iPhones, or just recognizing the bar pattern as strategies for pre-identification. Combine this with our "feeling it out" strategy, and your likely to walk away with just the figures you want.
The picture I have is from CopMike's review of The Spaceman minifigure. Assuming this package is final, we already have a partial view of one of the codes. Will others who've received early packages post the photos of the bar codes?
More to come...
(Picture from Eurobricks)