Barcode Scanner and PDF417
The support of PDF417 by barcode scanner can be described and summarized clearly and in points from the following aspects:
1. Overview of PDF417
PDF417, also known as "Portable Data File" 417, is a stacked two-dimensional barcode invented by SYMBOL (now renamed Zebra Technologies) in 1991. PDF417 is popular for its high capacity, high density and strong error correction ability. It consists of one or more bar-space combinations, each of which contains 4 bars and 4 spaces, a total of 17 modules, hence the name PDF417.
2. Main features of PDF417
Large information capacity: PDF417 barcode can hold a lot of information. Depending on the bar-space ratio, it can hold 250 to 1100 characters per square inch. On the effective area of the international standard card (about 2/3 of the credit card area), it can hold about 1850 characters or 1108 bytes of binary data.
Wide coding range: PDF417 barcode can not only represent numbers and letters, but also any digitizable information such as Chinese characters, photos, fingerprints, palm prints, signatures, sounds, etc.
Strong error correction ability: PDF417's error correction ability is divided into 9 levels. The higher the level, the stronger the correction ability. This error correction function allows the information to be read correctly even if the barcode is partially damaged.
Good confidentiality and anti-counterfeiting performance: PDF417 barcode has multiple anti-counterfeiting features, such as password anti-counterfeiting and software encryption, which makes it have extremely strong confidentiality and anti-counterfeiting performance.
3. Barcode scanner support for PDF417
Compatibility: Most modern barcode scanners, especially scanning devices designed for two-dimensional barcodes, support PDF417 scanning and parsing.
Scanning speed: Due to the clarity and standardization of PDF417 barcodes, barcode scanners can quickly and accurately capture and parse the information in them.
Accuracy: Barcode scanners are usually equipped with advanced decoding algorithms and verification mechanisms to ensure the accuracy of PDF417 barcode information.
4. Recommendations for using PDF417
Choose the right device: When choosing a barcode scanner, you need to make sure it supports PDF417 barcodes. In addition, consider other characteristics of the device, such as scanning speed, scanning distance, resolution, etc., to meet the needs of specific application scenarios. The barcode scanners produced by XTIOT can well meet the barcode scanning needs of different customers.
Ensure barcode quality: In order to obtain better scanning results, the print quality of PDF417 barcodes should be clear and high in contrast, and the barcodes should be avoided from being contaminated or damaged.
Training and operation: Train the operators of the barcode scanners to ensure that they are proficient in the use and precautions of the equipment to improve scanning efficiency and accuracy.
Barcode scanners provide good support for PDF417 and can meet the needs of different application scenarios. Scanning efficiency and accuracy can be further improved by choosing the right device, ensuring barcode quality and conducting personnel training.
