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In fingerprints we trust

Your fingerprints are uniquely yours. No two people have the same friction ridges, not even twins. Writes The Paris Review:

“Scientists describe the basic patterns of fingerprints in terms of arches, whorls, and loops. (Seventy percent of a fingerprint is made up of loops.) Closer features include dots, lakes, islands, spurs, crossings, and bifurcations. It is true that every print is unique to every finger, even for identical twins, who share the same genetic code.”

Before the fingerprint became a forensic science, its original purpose was economic. Thumbs acted as a stamp of approval.

“Thumb marks were used as personal seals to close business in Babylonia, and, in 1303, a Persian vizier recounted the use of fingerprints as signatures during the Qin and Han Dynasties, noting, “Experience has shown that no two individuals have fingers precisely alike.” The Chinese had realized that before anyone: a Qin dynasty document from the third-century B.C.E, titled “The Volume of Crime Scene Investigation—Burglary,” pointed up fingerprints as a means of evincing whodunnit.”

Even more interesting is how fingerprints form, made permanent by Week 19 of pregnancy. “Fingerprints are formed by friction from touching the walls of our mother’s womb. Sometimes they are called “chanced impressions.””

Technically, your fingerprints or eyeballs could your access key to anything. You don’t need the phone to act as your digital keys or wallet. Logging into a smartphone with a thumb, the mobile device merely serves as an interlocutor for checking out at places like Starbucks or the bank.

“Wallets and keys might get lost for good if we can pay for cappuccinos and power up cars with our eyeballs or fingers. In the early aughts, when we were increasingly imagining a future where people moved through the world—for better or worse—without anonymity, those people were chipped. But who needs computer chips when you’ve got fingerprints? “The future of biometrics has never been better,” said Becker. “Biometrics have gone mainstream—now people have expectations and habits. People are checking into every Delta Sky Club in the country with biometrics.””

The grooves within your fingerprints can also predict your future.

“The patterns on our fingers do seem to correspond to the lobes of our brains. Some researchers are hailing fingerprints as blueprints. “Fingerprints are the mirrors to our inborn talents and potentials, knacks and likings,” write the authors of one recent paper, who believe people may be able to use their fingerprints to unlock their best selves.”

Fascinating.

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By Wells Baum

Wells Baum is a daily blogger who writes about Life & Arts. He's also the author of Discvr.blog and four books.