In the past few years, we have covered a bunch of interesting third arm projects that can assist workers on a daily basis. Christian I. Penaloza and Shuichi Nishio has published a paper that takes a look at using a noninvasive BMI to control a robotic third arm for multitasking.
Such a solution allows wearers to perform multiple tasks not easily possible without the third arm. For instance, as the above video shows, users can have a sip of water without taking their hands off their keyboard.
[HT]