The Simple Signature That Replaced Gold for Tourists
Before global ATMs and credit cards, traveling abroad with large amounts of cash was incredibly dangerous. In 1891, Marcellus Berry, an employee at American Express, solved this by patenting the traveler's cheque. It used a dual-signature system: the buyer signed the check once upon purchase, and again in front of the merchant to prove their identity. If stolen, the checks were easily replaced, transforming the economics of global tourism.
The Perils of Carrying Wealth Abroad
For centuries, journeying across national borders required travelers to navigate a precarious financial dilemma. Carrying physical gold or foreign banknotes made travelers vulnerable to robbery, loss, and extortion. If physical currency disappeared on the road, the traveler had virtually no recourse, as lost paper notes or coins were untraceable and immediately spendable by whoever found or stole them.
Early banking systems attempted to mitigate this risk through instruments known as letters of credit and circular notes. Financial institutions, such as the London Credit Exchange Company in the late eighteenth century and later Thomas Cook in the nineteenth century, issued paper vouchers that allowed clients to withdraw funds at designated correspondent banks abroad. However, these systems remained cumbersome. Letters of credit required travelers to find specific banking houses during limited operating hours, verify their identity through slow administrative checks, and hope the local banker recognized the issuing institution.
Marcellus Berry and the Dual-Signature System
The turning point for international travel finance came at the end of the nineteenth century. American Express president J.C. Fargo reportedly encountered immense frustration while traveling in Europe, finding it difficult to convert his letters of credit into cash in smaller towns and cities. Upon his return, he tasked American Express employee Marcellus Berry with designing a reliable, widely acceptable, and secure alternative.
In 1891, Berry developed and patented the modern traveler's cheque, introducing a deceptively simple security mechanism based on dual signatures. When a customer purchased a set of cheques from a bank or agency, they signed each document once across the top. The cheque remained incomplete and unspendable until the owner signed it a second time—known as the countersignature—directly in the presence of the merchant, hotelier, or foreign bank clerk accepting it.