Syncing another device with Firefox privately keeps your bookmarks, passwords and other Firefox data the same everywhere you use Firefox.
Amtawi n yibenk-nniḍen s tbaḍnit n Firefox ad iǧǧ ticraḍ-ik•im n yisebtar awalen uffiren d yisefka-nniḍen n Firefox d widak kan, ur ttbeddilen ara anida tebɣuḍ tesqedceḍ Firefox.