PSADNA Autograph Authentication. PSA/DNA employs a four-level autograph authentication system to combat counterfeiters. Step 1: Examination. Step 2: Anti-Counterfeiting. Step 3: Certification. Step 4: Documentation. Get the full detail behind the hobby's most secure authentication process. USPSIMpb Postal Barcode. USPS GS1-128 (EAN-128) - used for special services such as delivery confirmation. OCR-A - a text font typeface used to automate the reading of address data. FIM - The Facing Identification Mark is used to identify business reply, courtesy, and OCR readable mail. Reading, scanning, and verifying barcodes. Astep-by-step guide to implementing a barcode system. Now that you know how barcodes can benefit your small business, let's talk about how to get started with your own barcode system. 1. Choose a barcode type. There are two main types of barcodes: linear (or 1D) and 2D. Inshort, the UPC is a 12-digit unique code for your product represented by scannable bars. Universal Product Codes (also known as GTIN-12) appear as lines (bars) of varying widths representing the series of numbers commonly shown below the bars. Barcode scanners read the bars and convert them back to the 12-digit UPC number that they represent. Forthe item that you want to scan, locate the barcode on the item or its packaging. 3. Center the barcode in the scanner's frame. You'll see a box in the middle of your screen; center your item's barcode in the box to prompt it to scan. Once lined up and in focus, the barcode will scan instantly. 4. 81Ek5k.

how can i tell if a barcode is original