Whether you want something delish to snack on while marathon watching, or something pretty to look at. View Entire Post › ...

Abstract: Existing hand gesture authentication methods require the probe gesture types to be consistent with the registered ones, which reduces the user-friendliness and efficiency of authentication.

This tutorial explains how to download private videos & playlists, or rather: videos you need to be logged in for. I can't guarantee this will work for every service out there, but it for sure works ...