What is the scope of wearable technology?

The scope of wearable technology is pretty well as wide as human imagination and the size and weight of a human being. We don't have to rely on history to survey the various forms of decoration but to consider what is a) useful and b) desirable for a human to carry around with him/her. We don't want it to be heavy, so this limits technology to designing micro instrumentation.

It is probably easiest to take each bodily part in turn and consider what could be done. For instance: eyes. We might want to see: clearer. further. nearer. changed/distorted. 3D/2D converted. fragmented. xrayed...and so on. Even just that gives rise to hundreds of applications. Neck: nothing too heavy or constricting. Adornment, support, anchoring. I think this answer shows how wide the scope!

I wouldn't say 'infinite' because the extent is determined by the number of usable parts of the body! However, smart patches can be worn anywhere on the body to monitor health needs. Creative use of wearable tecnology can excite the worlds of medicine, health, safety, music, communication, warmth, sport, arts and culture. Future applications worn on the jaw may predict need for medical attention, on the foot may protect a woman from attack, on the ear may allow simultaneous enjoyment of music and awareness of everyday sounds in the environment.

Smart glasses are already proving an excellent aid for sports and can now be adapted to allow bone conduction so that Alexa can operate without the need for ear buds. Future wearable technology may also include a gadget that provides personal warmth via the wrist, obviating the need for heating. It really is an open field for those with creative minds. A third world of devices will be here soon.