And Auto Unlock lets users automatically log into their Mac when they are wearing an authenticated Apple Watch. Apple Pay on the web makes the online shopping experience in Safari more convenient and secure than ever. Shoppers can now click the Apple Pay button at checkout on nearly 300,000 participating websites, including 1-800-Flowers, Gilt, Instacart, Lululemon, Warby Parker and more, and then complete their purchase with Touch ID on iPhone 6 or later or with Apple Watch.