When was the fingerprint lighter invented?

The end of the 19th century. According to the Zuangua Patent Network, the invention of fingerprint lighters can be traced back to the end of the 19th century. According to historical records, Swiss inventor Cao Aldernan patented the first reliable fingerprint lighter in 1883. This lighter uses metal wool and an iron-magnesium alloy to generate sparks through friction to ignite the fuel.