Definition: Meaning of, brain fingerprinting in English to English dictionary.
Pronunciation:/ breɪn ˈfɪŋgəprɪntɪŋ /
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[uncountable]
the process of measuring the electrical activity in someone's brain to see if they react to a particular object or picture. This process could be used to check if someone is telling the truth, for example if they are answering questions from the police.