Works with the Apple Find My App: Add your KeySmart Card to the Find My app on your Apple device. Play a sound on your KeySmart Card to find it nearby, or locate it with the Apple Find My Network, with the help of millions of Apple devices around the world. Get Notified When You Leave It Behind. The Apple Find My app proactively prevents you from losing your wallet or ID card by sending notifications to your iPhone, CarPlay, or AirPods if you leave your KeySmart Card behind. Lost Mode Helps You Get It Back. If your KeySmart Card goes missing, you’ll see the last known location on a map. Lost Mode will show a message and contact information to anyone who finds your card. Ultra-Slim – The Most Sleek Tracking Card Anywhere. The KeySmart Card is the size of about two credit cards – less than 2mm thick – and the slimmest tracking card on the market. Lanyard Slot – Never Lose Your ID Card or Security Badge Again. If you use a card to enter your office or hospital, the KeySmart Card can save you from annoying HR visits and security breaches. Wireless Charging: Use any qi-enabled wireless charger to charge up your KeySmart Card. No special charging cable required. Reusable and built to last. Long Lasting - 5 Months of Battery. The KeySmart Card lasts up to 5 months on a single charge, so you don’t have to worry about recharging it every week. Waterproof & Ready for Adventure: Don’t worry about accidents, spills, splashes, or dips. With an IPX8 rating, the KeySmart Card has one of the highest waterproof ratings possible – just in case you drop it in the pool or the ocean. It can survive up to 1 hour in 3.3 feet of water. WARNING: This product can expose you to chemicals including Bisphenol A (BPA), which is known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov See KeySmart SmartCard Instructions here.