Traceability Foundations
Identity
What the thing is, read by a machine rather than typed by a person.
Two ways to carry identity
QR is cheap and needs line of sight. RFID reads in bulk and reads through packaging. Most real installations use both, at different stages.
Choosing between them
QR
- One item at a time
- Printed with the label
- Needs to be visible
RFID
- A pallet at a time
- Tag has a cost
- Reads through packaging