This work raises a variety of concerns on many fronts. One of these is the need for lightweight, efficiently-powered computation, which is comfortable to wear, i.e., that does not interfere with a person's ordinary comfort or activities. Another need is the development of robust sensors with reliable contact. Whether these are flexible rubberized electrodes attached with jewelry, or small sensors for temperature sewn into our garments, or stretchy fabric comprising parts of a sports bra, these interfaces need to provide accurate signal collection and be comfortable enough not to disturb their wearer.
One of the many interface concerns involves how to present affective information to the wearer and to those with whom the wearer wants it communicated. If you are willing to transmit your mood to your spouse 0at the end of the day, how should this information be presented? As a synthesized facial expression, modulated vocal announcement, or, encoded in something more subtle, such as a note announcing the arrival of fresh flowers at the local store which is on your way home? Of course, privacy is also a priority, since the good mood you are in might be great for your family to know about, but not something you want taken advantage of by a salesperson.