You don’t have to be tied to Chrome on your desktop to shop with ease now. If you saved your payment information with Chrome, then you can access this on any device you have Chrome on. You’ll be prompted to use saved payment information when filling out a checkout form. To use this feature, you don’t need to have Chrome Sync turned on (it also won’t turn Sync on for you). As long as you’re logged into your Google account and buying from a place that supports Google Play, it can pull up your saved credit or debit card information. As a precaution, it’ll still ask you to confirm your card’s CVC when you checkout. You also have the option to add a new payment method to your account, which Google with confirm through an email. You can also save a payment method locally by pulling up Chrome Settings > Payment Methods > Add. This will be useful if you want your payment information saved on a single device.
Source: SlashGear