With users' growing concern about privacy, Samsung wants to meet the consumers' demands in India by introducing a brand new feature called AltZLife, which is essentially a system-wide private mode, which you can activate on the fly.
As of now, only existing and new owners of the Galaxy A51 and A71 can take advantage of the functionality. Double-pressing the power button will switch between the normal and private mode while an AI-powered algorithm intelligently suggests what content to move to the secure folder. Things such as chat accounts, images and apps can be transferred over to the AltZLife mode.
Samsung has started seeding an update yesterday so AltZLife should hit most if not all Galaxy A51 and A71 phones in the following days. And going by Samsung's blog post, it seems like the feature is limited to Indian users only. At least for now.