A Brief History of the Barcode

The history of the barcode starts with a sketch drawn in the sand on a Florida beach. Long before a single item beeped at a checkout, two inventors were staring at Morse code and wondering whether dots and dashes could be stretched into stripes a machine could read. This is the story of how those stripes conquered the world. 🐾

Who invented the barcode?

The barcode was conceived by two men, Norman Joseph Woodland and Bernard Silver, in the late 1940s. Silver overheard a supermarket executive asking a university dean to develop a system that could automatically read product information at the checkout. The dean declined, but Silver mentioned the challenge to his friend Woodland, and the idea took hold.

Woodland was so gripped by the problem that he left his job and moved in with his grandfather in Florida to think it through. That is where the famous breakthrough happened.

How did Morse code and a beach lead to the barcode?

Woodland knew Morse code from his time in the Boy Scouts. Sitting on the beach one day, he idly drew the dots and dashes of Morse in the sand, then pulled his fingers straight down through them, stretching the marks into a series of thin and thick lines.

In that moment, Morse code's dots and dashes became bars of different widths, and the idea of the barcode was born.

To make the code readable from any direction, Woodland first imagined bending those lines into concentric circles, producing a bullseye pattern rather than the rows of stripes we know today. This connection between an old signalling system and a new machine-readable one is part of a much longer story, which we trace in a history of encoding.

What did the 1952 patent cover?

Woodland and Silver filed a patent for their "Classifying Apparatus and Method" in 1949, and it was granted in 1952. The patent described the bullseye design, a circular arrangement of bars that a scanner could read no matter how the item was turned.

The idea was decades ahead of its supporting technology. Reading the code reliably required a bright, focused light source and electronics fast enough to interpret the reflections. In 1952, neither existed in a practical, affordable form.

• 1949 — Patent filed for the bullseye barcode concept.
• 1952 — Patent granted to Woodland and Silver.
• 1960s — The laser matures, offering the intense, precise light a scanner needs.
• 1970s — Cheap computing finally makes checkout scanning viable.

Why did the barcode take twenty years to arrive?

The barcode is a classic case of an invention waiting for the rest of the world to catch up. Two technologies had to mature before it could work at a supermarket till.

The laser

Early scanners struggled to read the fine bars with ordinary light. The invention and refinement of the laser in the 1960s gave engineers a bright, tightly focused beam that could distinguish narrow stripes quickly and accurately.

The computer

A barcode is useless without something to look up what it means. As computers shrank and grew cheaper, it became practical to connect a scanner to a database of prices and products in real time. Our guide to how barcode scanners work explains the reading process in detail.

How did the UPC replace the bullseye?

By the early 1970s, the grocery industry was ready to standardize. A committee evaluated competing designs, and the winner was not Woodland's original bullseye but a rectangular pattern of parallel lines developed by George Laurer at IBM. This became the Universal Product Code, or UPC.

The linear UPC printed more cleanly and smeared less than the circular bullseye, which could blur into an unreadable smudge if the printing stretched. Woodland, by then an IBM employee himself, was part of the environment that produced the winning standard.

The very first live UPC scan took place on June 26, 1974, in Troy, Ohio, where a checkout beeped over a 10-pack of Wrigley's Juicy Fruit gum. We tell that pivotal story in full in the UPC barcode history.

How did the barcode change the world?

Once retailers adopted the UPC, the effects rippled far beyond faster checkouts. The barcode quietly rebuilt the machinery of modern commerce.

Area	Before barcodes	After barcodes
Checkout	Manual price entry, frequent errors	Fast, accurate scanning
Inventory	Hand counting	Automated, real-time tracking
Logistics	Paper-based, slow	Scanned at every step
Pricing	Sticker on every item	Central database

To keep all those codes consistent across companies and countries, a global system of standards grew up around them, which we cover in GS1 barcode standards.

How does the barcode connect to the QR code?

The striped 1D barcode was a triumph, but it had a hard limit: it could only hold a small amount of data, encoded in one direction. As industries demanded more information per label, engineers began stacking and gridding codes into two dimensions, leading eventually to 2D barcodes and, in 1994, the QR code.

So the beach sketch that started it all leads in a straight line to the squares you scan today. If you want to make one of those modern codes, you can create a free QR code in seconds, no beach required. For the next chapter, read the history of the QR code.

Frequently asked questions

Who invented the barcode?

Norman Joseph Woodland and Bernard Silver conceived the barcode in the late 1940s and received a patent for their bullseye design in 1952.

What inspired the original barcode design?

Woodland drew Morse code's dots and dashes in beach sand and pulled them downward into stripes, turning a signalling system into a machine-readable pattern.

Why did the barcode take so long to become common?

It needed two later technologies to mature: the laser, for reliably reading fine stripes, and cheap computers, for looking up what each code meant.

What was the first product scanned with a barcode?

A 10-pack of Wrigley's Juicy Fruit gum, scanned on June 26, 1974, in Troy, Ohio, using the new Universal Product Code.

What is the difference between a barcode and a QR code?

A traditional barcode stores data in one dimension (stripe widths) and holds little information, while a QR code stores data in two dimensions and can hold thousands of characters.