As an Amazon Associate I earn from qualifying purchases. This post may contain affiliate links. Read our disclosure.
Quick answer: you need a scanner once you are counting stock, checking FNSKU or UPC labels before shipping to FBA or WFS, or picking more than a few dozen orders a day. A basic wired USB 1D scanner is enough for UPC and FNSKU barcodes; pay more for 2D only if you scan QR codes or scan from phone screens.
Our top picks
Signs you need one
- You prep inventory for Amazon FBA or Walmart WFS and want to confirm labels scan before shipping.
- You count stock regularly and mistakes creep in.
- You pick and pack orders against SKU barcodes.
Types
| Type | Reads | Best for |
|---|---|---|
| 1D laser / linear | UPC, EAN, FNSKU (Code 128) | Most sellers |
| 2D imager | 1D plus QR and DataMatrix, screens | QR codes, phone screens, damaged labels |
| Wired USB | Plug in and scan like a keyboard | Fixed packing station |
| Wireless / Bluetooth | Same, cordless | Counting stock on shelves |
How sellers use it day to day
- Scan a test FNSKU or UPC from each print batch before labelling the rest.
- Scan products into a spreadsheet to count stock: each scan types the barcode into the cell.
- Scan the SKU at packing to confirm the right item goes in the parcel.
Popular options
Related: how to print FNSKU labels.