The trick of the lock: Dorothy L. Sayers and the invention of the voice print
Pre-eminent among writers of mystery stories is, in my opinion, Dorothy L. Sayers. She is ingenious, witty, original – and scientific too, including themes like the fourth dimension, electroplating, and the acoustics of bells in some of her best stories. She is also the inventor of the voice-activated lock, which her hero Lord Wimsey deploys in the 1928 short story ‘The Adventurous Exploit of the Cave of Ali Baba’.