GS1-128 Scanner & Decoder reads GS1-128 (formerly EAN-128/UCC-128) and Code 128 barcodes with your camera and instantly shows what is inside: every Application Identifier (AI) with its name and value, clearly laid out in a table.

SCAN
• Fast barcode recognition on the device (Google ML Kit)
• Default mode “Code 128 only”, optional “All types” (incl. QR, Data Matrix, EAN/UPC, Code 39/93, ITF, Codabar, PDF417, Aztec)
• EAN-8, EAN-13 and UPC-A are read as GTIN (AI 01), even in “Code 128 only” mode (can be switched off)
• Colored frame around the detected barcode: green = new, orange = already scanned, red = not accepted, with a short reason (can be switched off)
• Scan several labels in a row – the result list collects all AIs and hides duplicate AI/value pairs
• Adjustable scan countdown (off, 3, 5 or 10 s) against accidental double scans, pause after scan, manual pause, torch, haptic feedback
• Manual entry by typing or pasting, FNC1/GS as

DECODE
• Catalogue of more than 500 Application Identifiers based on the GS1 Syntax Dictionary
• Fixed and variable field lengths, FNC1/group separator
• Date fields (YYMMDD) shown in readable form, decimal values (e.g. weight, dimensions) with decimal point and unit
• Check digit validation for SSCC and GTIN: a wrong check digit is flagged with a warning (orange), the code is still accepted
• Clear status: “Parsed successfully” or “Parsed with warnings”
• AI reference list with search by number, title or meaning

SHARE
• Share the result as text (symbology, raw data, AI table), e.g. by email or messenger

REST INTEGRATION (OPTIONAL)
Send scan values to your own system, e.g. ERP, WMS or your own API:
• GET, POST, PUT – HTTPS only
• Placeholders such as {ai_00}, {ai_01}, {ai_10} or {raw} in URL, headers and JSON template
• Send as query parameters, headers or JSON body
• Authentication: bearer token, Basic, API key, custom headers
• Trigger by tap or automatically after a scan (for one configuration)
• Server response clearly displayed (incl. status code) – can be set per configuration
• Optionally clear the list automatically on success
• Credentials are stored encrypted on the device; if secure storage is not available on a device, they are kept in memory only
• Disabled example configurations (incl. Open Food Facts) to try it out

MORE
• User interface in English and German, selectable in Settings
• Light, dark or system theme
• Privacy policy and open-source licenses under Settings > About
• No account needed; scan results are not stored permanently

Note: This app is an independent project and is not affiliated with, endorsed by or sponsored by GS1. GS1 is a registered trademark of GS1 AISBL.