noun
handwriting analysis; handwriting verification
Technical term used in forensics, document examination, and legal contexts to determine the authenticity or authorship of handwriting.
警察は遺書の筆跡鑑定を専門家に依頼した。
The police requested a handwriting analysis of the suicide note from an expert.
筆跡
As a result of handwriting verification, the signature was found to be forged.