Arthur Daniels looks at what you can see in an execution plan with dynamic data masking:
I think Dynamic Data Masking is pretty cool. The idea is basically to provide a mask for certain users when they might see protected data. The documentation on this feature is actually pretty deep, it’s worth a look.
I just want to show you how you can see the masking in an execution plan. Let’s mask some data in StackOverflow2010! (Also, there’s an interesting side note at the end)
Click through for those notes.