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Using electronic communications without ID -- unlike this puzzle (9)

Ross

I believe the answer is:

paperless

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

'using electronic communications without id unlike this puzzle' is the definition.
The definition suggests a singular noun which matches the answer.

'without id unlike this puzzle' is the wordplay.
I cannot really understand how this works, but
'without' could be 'less' (I've seen this in another clue) and 'less' is found in the answer.
The remaining letters 'paper' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in The Telegraph.
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