A security flaw in the iPhone allows strangers to bypass the handset’s lock screen with a few button presses.
The t-shirt appears to show a hole through the wearer’s torso which reveals the scenery behind them, in homage to Valve Corporation’s puzzle platformer Portal. To create the effect, Heck cut a portal-shaped hole in the front of a t-shirt and positioned an LCD display behind the hole. On the back of the t-shirt was a CCD camera.
Whatever the camera captures behind the wearer of the t-shirt is displayed on the screen at the front, thus giving the impression of a gaping hole in the person’s torso.