GS1 barcodes: GTIN, SSCC and Application Identifiers

Skills you'll practise

• Distinguish a GTIN (trade item) from an SSCC (logistic unit) on a label
• Read a GS1 human-readable string and identify the GTIN, lot, dates, serial and count from their Application Identifiers
• Calculate and verify a GS1 check digit
• Explain why variable-length fields such as the lot are separated by FNC1 or placed last
• Diagnose common scanning failures and choose a safe response instead of keying data by hand

Course outline

1. 1.GS1 barcodes: GTIN, SSCC and Application IdentifiersVideo · 3 min
2. 2.GS1 keys: GTIN and SSCCLesson · 15 min
3. 3.Application Identifiers and GS1-128Lesson · 20 min
4. 4.Check digits and scanning problemsLesson · 15 min
5. 5.GS1 barcodes: GTIN, SSCC and Application Identifiers: knowledge checkKnowledge check · 18 questions
6. 6.Nine pallets, one with the wrong lotScenario
7. 7.Final exam7 questions · passing it completes the course, so people who already know the material can test out

Sources it draws on

The lessons and questions are written from these references, so learners can go back to the original.

• GS1 General Specifications (GTIN, SSCC, Application Identifiers, GS1-128, check digit)
• GS1: How to calculate a check digit manually
• GS1 Sweden: Application identifiers (excerpt of the GS1 General Specifications)
• GS1 New Zealand: GS1-128 basics (variable-length fields and FNC1)