More than a billion people found in machine search (7)

I believe the answer is:

chinese

'more than a billion people' is the definition.

'in machine search' is the wordplay.
'in' indicates a hidden word.
'CHINESE' is hidden within 'machine search'.

'found' is the link.

(Other definitions for chinese that I've seen before include "Member of Han people" , "CIE hens from Beijing, say" , "Of the most populous country" , "Boxes within boxes" , "Since he is from a very populated nation" .)

I've seen this clue in The Times.

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