A new study seemingly upends a long-accepted truth about fingerprints: They are not, a Columbia University undergraduate and his colleagues argue, all unique.

Dirty, fingerprint-smudged walls can make your home look grimy even when everything else is tidy and clean. Luckily, cleaning them is an easy fix, says Krueger.

The Ultraloq Bolt Fingerprint Matter smart lock is one of three new smart locks from U-tec that come in Matter-over-Thread, Wi-Fi, and Apple Home Key versions.

A new study seemingly upends a long-accepted truth about fingerprints: They are not, a Columbia University undergraduate and his colleagues argue, all unique.