Concept: The most interesting gaming accessory made for iPhone 4

Those from Yanko Design have designed an accessory for iPhone 4 that would be more than ideal for hardcore gamers and not only that. Those from Yanko have imagined a kind of case for the iPhone 4 consisting of 2 pieces in which the terminal is inserted and adds physical buttons that can be used in games. In their concept, this case borrowed the design of the iPhone 4 terminal to blend perfectly with the device and keep the external appearance of the terminal intact.

The case joins in the middle, where of course the connection between the top and bottom buttons is made, but notice that this case takes over the functions of the sleep and volume buttons. Practically, the new case expands the size of the terminal but keeps its functions, so theoretically you will have access to everything without any problem. Of course we are talking about a concept, but how good would it look in reality and how useful would it be?