Taptool is one of the promising projects on Kickstarter that aims to facilitate our work with the touch screen, making it easier, cleaner and more precisely.
Taptool has the appearance of a thimble from heat-conductive plastic which is worn on the tip of your finger. They can introduce characters or to direct the cursor without touching the display with your fingers. The orthopedic shape of the nozzle supports the thumb, reducing strain on joints.
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The device does not apply to wearable technology, but it would be useful to people who fear bacteria, people with long nails and simple fans clean displays. https://www.kickstarter.com/projects/485421630/taptool-the-smartest-accessory-youve-never-thought/widget/video.html