Samsung Flow is a software product that enables a seamless, secure, connected experience across your devices. You can authenticate your Tablet/PC with your smartphone, share content between devices, and sync notifications or view contents from your smartphone on your Tablet/PC. You can turn on the smartphone's Mobile Hotspot to keep your Tablet/PC connected.
You can also log in to your Tablet/PC with your biometric data (Iris, Fingerprints) if you register with Samsung Pass.

You can also use Samsung Flow on Galaxy Watch. Unlock and Sign in to your Tablet/PC using your Samsung Wearable. Using watch to unlock Tablet/PC, you can also view notifications on your phone and check the flow history of your shared content.
The following devices support Samsung Flow:
1. Windows Tablet/PC : Windows 10 OS Creators update (V1703) and June patch build (15063.413)
(Galaxy TabPro S, Galaxy Book, Galaxy Book2, PC)
2. Android Tablet: Android Marshmallow OS or newer (Galaxy Tab S4, Tab S3, Tab S2, Tab A (2018, 10.5), Tab A2, Tab…