A newly formulated nail polish could one day let people activate touchscreens with their fingernails.
When pressed to a screen, the polish disrupts the screen’s electric field, which the device registers as touch. While the formula isn’t commercially viable yet, it could allow people with long nails to use them like styluses.
“This is huge, because it shows that functional behavior can be embedded invisibly into everyday cosmetic materials,” says Shuyi Sun, a computer scientist who has studied cosmetic biosensors and now works at the Association of California Nurse Leaders in Sacramento.
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