When a business or industry determines which bar code labels to use to meets its and its customers’ needs and which equipment will best scan and track those labels, one of the crucial focal points is “1D or 2D.” Knowing the differences between them is paramount to making an informed decision.
It Isn’t L x W?
All bar codes are computer-generated encryption markers that electronically identify objects. Sometimes, the bar code contains simple information; sometimes, more complex. The physical size of the bar code might indicate in what format data is encrypted—alpha, numeric, or both, but it does not delineate whether it’s 1D or 2D.
The “D” operationally indications “direction,” though the term “dimension” is used. It does not annotate the bar code cubic parameters—whether they are X cm high, Y cm wide, or Z cm deep. A one-dimensional (1D) or two-dimensional (2D) bar code delineates the data encryption configuration within the coding, itself—in how many dimensions the information is encrypted--one or two.
1D Bar Codes
Because they contain small amounts of information, most 1D bar codes are coincidentally relatively small in size—generally smaller than 2D bar codes. Encryption is formatted in one direction—vertically. Most 1D bar codes expand data placement along the entire line or height of the bar code. The data is repeated numerous times along its lay, which allows data retrieval by a scanner even if the bar code becomes damaged.
2D Bar Codes
2D bar codes encrypt data both vertically and horizontally. Instead of solid lines, 2D bar codes (PDF417, for example) have a more jagged appearance. Generally, 2D bar codes hold more data as well as having a high data redundancy for retrieval continuity.
Choosing 1D or 2D
1D bar codes can suffice with small amounts of data—up to approximately 15 characters. 2D bar codes have a greater capacity for data storage. Because of the multi-dimensional capacity of 2D bar codes, more complex encryption, higher storage capacity, and full data redundancy are advantages over 1D bar codes.
Summary
Both 1D and 2D bar codes possess data storage, encryption, and retrieval protection capabilities. Choose the type that best fits your business and customer needs.