That’s right, this month’s IEEE Spectrum has lots of sweaty people, and details about how we can use sweat to measure the physical state of the human body. It also brings out a really interesting piece of tech I’d never heard of, called Iontophoresis. This process uses an electrically charged pad on the skin, runs a low current through it, and causes the skin to sweat, which will draw the medication down into the dermis. Here’s a PDF of an excellent article by the Physical Therapy Journal that details the methods and challenges of using this particular technology. So they used these sweat-inducing patches to keep that lovely sweat a’flowing. From that, they went on to measure the electrolytes and other chemicals found in the sweat.
There’s also a great article on turning car bodies “see-through” to be able to see blind spots. Even though it takes quite a while for auto manufacturers to get new tech integrated into their vehicles, maybe someday we’ll get them. At least before the cars drive themselves, right?