Gaze tracker

It sure is ugly, but:

the wearable headphone gaze detector; slightly less elegant than the traditional neural implant, with this system you could not only record the goings on of your days and "bookmark" important events, but also train the cameras to feed you information about your surroundings based on QR codes or possibly eventually object recognition; think of it as augmented aural reality triggered by giving a passing glance.

Pretty cool concept.