All About Barcodes: Differences Between 1D and 2D Barcodes
From convenience store products to delivery boxes, we clearly summarize the types and features of barcodes around us.
Whether buying items at a mart, receiving packages, or even using mobile coupons, we encounter barcodes everywhere. These simple-looking patterns of thick black bars, thin bars, and white spaces hide a massive amount of information.
In this article, we will take a closer look at how barcodes work in our daily lives and the differences between 1D and 2D barcodes.
What is a Barcode?
A barcode is a system that encodes numbers or characters into a pattern of black bars of varying widths and white spaces so that computers can read them. A barcode scanner shines light onto this pattern and detects the amount of reflected light to decode the information.
1D Barcodes (Linear Barcodes)
This is the most common form we think of, consisting of a series of vertical lines.
- Structure: It stores data along a single horizontal axis.
- Capacity: It typically stores around 8 to 15 numeric or alphanumeric characters, so data capacity is limited.
- Use cases: Mostly used for product identification (EAN-13, UPC), books (ISBN), and shipping labels (Code 128).
- Pros & cons: It can be read very quickly just by scanning across the lines, but to hold more information, the horizontal length of the barcode must increase indefinitely.
2D Barcodes (Two-Dimensional Barcodes)
This is an advanced form of barcode that uses both horizontal and vertical axes to store data. It consists of patterns of dots or mosaic shapes.
- Types: QR Codes (Quick Response Codes), Data Matrix, PDF417, etc.
- Capacity: It can store massive amounts of data, thousands of characters long, including numbers, letters, Kanji, and image links.
- Error correction: It boasts strong error correction capabilities, meaning the data can be recovered even if the code is torn or dirty, using the remaining patterns.
- Use cases: Used almost everywhere complex information transfer is needed, such as URL links, payment systems, electronic tickets, and medical device tracking.
1D vs. 2D Barcodes: Which Should You Choose?
- If you only need a simple ID and scan speed is crucial (e.g., at a checkout counter), 1D barcodes are appropriate.
- If you need to embed a lot of content like URLs or detailed data, or if the code needs to be very small, 2D barcodes are essential.
Recently, with the advancement of smartphone cameras, the use of 2D barcodes, especially QR codes, has exploded in our daily lives. Choose the right barcode for your purpose and start managing information smartly!
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