Barcode identifies the product type
A barcode often helps find the product quickly. Multiple units of the same SKU may share the same product barcode.
Serial identifies one unit
A serial number distinguishes one physical unit, useful for electronics, warranty and traceability.
IMEI identifies a handset
Mobile devices use IMEI identifiers. Record the inward IMEI and select the available unit at sale.
- Barcode: fast product lookup
- Serial: unique unit tracking
- IMEI: handset identity
- Never reuse an unavailable unique identifier