Google is working on a new, controversial reCAPTCHA challenge that might require you to literally show it your hand.

Most prosthetic hands today still struggle with a fundamental problem: No two amputees are the same, yet most devices are designed as if they are. That mismatch makes natural, intuitive control ...

Google is testing a reCAPTCHA check that switches on a user's camera and asks them to wave or hold up an open palm.

Think back to the last time you jotted down a quick note or made a grocery list. Chances are, it wasn’t with pen and paper. Over the past decade, keyboards and screens have quietly replaced ...