Digital protection, rest falling out (6,5)

I believe the answer is:

finger stall

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'digital protection' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'rest falling out' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'rest'+'falling'='restfalling'
'restfalling' anagrammed gives 'FINGER-STALL'.

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