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Disable credit card syncing to prevent unwanted purchases on your shared devices.

[https://support.mozilla.org/kb/how-do-i-choose-what-information-sync-firefox Firefox Sync] lets you access data such as Bookmarks, History, Logins and Passwords, and Credit cards on other devices where you sign in with your Firefox accounts. To disable sync for sensitive data like credit cards and prevent purchases on a shared device, follow the steps below: #Click the {menu menu} button. #Click {menu Settings}. #Click ''Sync'' in the options to the left. #In these settings, you can choose what items to sync across devices where you logged in with your Firefox account. #If syncing is ON, then you're syncing the items that appear in the panel. #Click ''Change'' to open the Sync settings. #Uncheck the box next to Credit cards to stop syncing credit cards across devices. #Click {button Save changes}. Additionally, you can [https://support.mozilla.org/kb/credit-card-autofill#w_turn-credit-card-autofill-on-or-off disable credit card autofill] to prevent Firefox from filling in your credit card information on the device where your credit card information is saved. {note}We recommend users to [https://support.mozilla.org/en-US/kb/access-mozilla-services-firefox-account create a Firefox account] for each member of the family and to sign out every time to prevent credit cards or other sensitive information from being exposed.{/note}