<p>The KeySmart SmartCard works with Apple Find My, fits in your wallet, and lasts up to five months on a single charge.</p> <p>The post <a href="https://www.popsci.com/sponsored-content/three-keysmart-ultra-thin-find-my-smartcards-sponsored-deal/">Your wallet’s new best friend—smart tracking made easy</a> appeared first on <a href="https://www.popsci.com">Popular Science</a>.</p>