Document

TR005 LoRaWAN® Device Identification QR Codes ©2020 LoRa Alliance® Page 12 of 16 The authors reserve the right to change specifications without notice. 5 QR Code Physical Recommendations 288 289 The exact physical tag is not specified but MUST comply to the following requirements. 290 291 Note: 292 - Most QR codes default to Medium level of error correction. 293 - Version 4 QR code with level medium correction can contain up to 294 62 Binary or 90 Alphanumeric characters. 295 296 297 5.1 Requirement 1 298 299 The QR code format SHALL be correctly readable with standard readers, even when parts 300 of the QR code are dirty or damaged. 301 5.2 Requirement 2 302 303 The format SHALL allow a QR code with only mandatory parameters to be printed and 304 scanned on as little as a 7x7mm surface and still comply with the interoperability and 305 robustness requirement. Rationale: Some devices have tight space constraints on where to 306 print the QR-code and thus need a very small QR-code size. 307 5.3 Requirement 3 308 309 The QR code format SHALL be feasible to be added to the devices in mass production in a 310 cost-efficient manner. 311 312

• Cover
• 1 Conventions
• 2 Introduction
• 3 Background
• 4 Onboarding Tag Content
• 4.1 Character Set
• 4.2 Tag Information
• 4.2.1 SchemaID
• 4.2.2 JoinEUI
• 4.2.3 DevEUI
• 4.2.4 ProfileID
• 4.2.5 Optional Extensions
• 4.2.5.1 Checksum
• 4.2.5.2 OwnerToken
• 4.2.5.3 SerNum
• 4.2.5.4 Proprietary
• 4.3 Example QR Codes
• 5 QR Code Physical Recommendations
• 5.1 Requirement 1
• 5.2 Requirement 2
• 5.3 Requirement 3
• Appendix A. Example Generation and Use of OwnerToken
• Glossary
• 6 Bibliography
• 6.1 References
• 7 NOTICE OF USE AND DISCLOSURE