The Brazilian design agency, SPR have created 3 clever ads to prove that with human-nature, we usually ‘judge a book by its cover’ for the GSR Entrance Hall System. They aim to get viewers to spot the difference out of the group of almost-identical individuals.

See if you can spot the difference.

[slideshow]

GSR Entrance Hall System 3 GSR Entrance Hall System 1 GSR Entrance Hall System 2

[/slideshow]

Pictures from Ads of the World