Discussion: Addressing More Persistent Scanability and Barcode Format Standards
Following up on our earlier discussions about scannability, I wanted to focus on the technical standards that vendors must follow for truly reliable 2D barcodes. We know that AAMVA standards are the baseline, but what specifically are the most common "mistakes" that vendors make when encoding these barcodes? And how can we tell if our IDs are using the absolute latest standards? Let’s talk about barcode technical accuracy. How do we ensure they’re perfect?
First off, the "Data Sequence" is often where errors occur. The barcode doesn’t just contain your info; it contains it in a very specific, numbered sequence. If a vendor puts your weight before your height, or if they miss a required data field, a professional scanner will flag the card immediately. Let’s talk about the details. How do we check the strings?
What to Look for in a Truly Reliable Barcode String
- Correct Header Information: The barcode should start with a specific AAMVA header string. If this is missing or malformed, many professional scanners won’t even try to read the rest of the data.
- Accurate Data Delimiters: Different jurisdictions use different characters to separate data fields. A high-quality vendor will know the exact ones needed for your specific state or province.
- Complete Optional Data: The best barcodes don’t just have the basics; they include all the "optional" data fields (like eye color or hair color) that are found on official IDs.
I’ve been using some advanced PDF417 decoder tools to look at the raw data strings in my recent orders, and the top vendors are clearly doing their homework. They are producing strings that are virtually identical to official ones. What tools are you guys using? Have you found any specific data errors that we should warn the community about? Let’s keep this technical discussion going!
