Items without a barcode can be only added using the no-barcode option on your Scan n GO app scanning screen. If you are using a cipher kit, you do not need to individual no-barcode items to your shop.
When using Scan n GO, select a shop (it could be a greengrocer, bakery, butcher) and after selecting the no-barcode option on your scanning screen select the non-barcoded item you purchased (veg, fruit, meat, bread) and punch in the price you paid for each item. When you have non-barcoded items mixed with barcoded items in your big shop, select the no barcode option and add the items as you are scanning your barcoded items.
Scan n Go app no barcode option
You scan your non barcode items through selecting the non barcode symbol
For step by step guide to scanning no barcode items using Scan n Go, read this guide - How do I scan no barcode items using Scan n Go?