Superhuman Eyes

Electronic Contact Lenses Give Future You Crazy Eyesight, Heads-up Display - Jason Chen @ Gizmodo

Inventions like these contacts are the first serious step toward a computer-free internet interface. Beyond the mere superhuman vision capabilities, these lenses can act as head-up displays bringing you web access directly to your eye without necessitating brain surgery. Perhaps all you will need are these lenses and a Wi-fi device much like an iPhone or iPod Touch.
The next question that springs to mind is the idea of hacking into the visual display of these contacts, seeing what someone else it seeing directly. The trippiness of such an experience aside, along with the military applications, the issue of privacy does enter the equation as a skilled hacker would have the tools to "hack your eyes" to use the parlance of Ghost in the Shell. While no direct connection to the brain is required, people still look at their hands when entering information such as pin numbers and Social Security numbers. Moreover, such a hacker could insert false visual data leading to a person responding to things that aren't there.
Still, it's a fucking cool concept that should come to market. The privacy issues need dealing with, but that will come with time as well. I'm looking forward to getting my first pair when I'm fifty.