Digital art (6,8)

I believe the answer is:

finger painting

I'm a little stuck... Click here to teach me more about this clue!

'digital art' is the definition.
'finger painting' can be an answer for 'art' (finger painting is a kind of art). I am not certain of the 'digital' bit.

'digital art' is the wordplay.
'digital' becomes 'finger' (I am not sure about this - if you are sure you should believe this answer much more).
'art' becomes 'painting' (painting is a kind of art).
'finger'+'painting'='FINGER-PAINTING'

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I've seen this clue in The Sunday Times.

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