Eatper guide
How to scan food barcodes in Eatper
Barcode scanning is a way to find a product’s food record quickly. The important part comes after the scan: checking the match and choosing the amount you actually want to record. Here is how to handle a successful match, an unreadable code, or a missing product.
Scan and review the result
Open the scanner from the add-food flow. Give the app camera access if you want to scan visually. Hold the product barcode in view and wait for the lookup to finish; the product screen opens when Eatper finds a match.
- Check the product name and any identifying details against the package in your hand.
- Review the displayed amount. A package size or default serving is not necessarily the amount you ate.
- Adjust the amount and review the resulting nutrition information.
- Confirm the food addition, then check the destination meal and entry in your diary.
Treat the match as something to verify
Similar products can have similar names. Check the variant as well as the brand: a different flavour or formulation may not be the food you intended to log. A scanned code finds the catalogue record; it does not inspect the ingredients or nutrition on the physical package.
For example, if you scan a large tub but ate only part of it, change the amount before adding the food. If the result does not match the package, go back and search for the correct food instead of recording the closest-looking result automatically.
Enter a barcode without the camera
The scanner includes Enter barcode manually. Use it when the printed digits are readable but the camera cannot recognise the bars. Enter the code from the package and confirm it to run the lookup.
Manual entry is also available when camera permission is denied or the camera is unavailable. It searches for the same kind of product record; typing the code does not create a new product. If it finds nothing, check the digits before trying another route.
- Use the scanner’s flashlight control when extra light would help.
- Keep the full barcode visible rather than only its printed number.
- Distinguish a camera problem from a product that is absent from the catalogue.
What to do when a product is missing
A Product not found message means the lookup did not return that product. Coverage is not guaranteed for every barcode, brand, or country. You can cancel the lookup, return to food search, and look for the product by name and brand.
The missing-product screen also offers a way to report missing food data. A report helps identify the gap, but submitting it does not mean the product is immediately added or verified. Continue with a food record you can check rather than waiting for a report to change the catalogue.
A lookup error is different from a missing product. When Eatper offers Retry, try the lookup again after checking your connection. Repeatedly scanning the same code will not fix an incorrect product match.
Check the saved amount once
After adding the food, look at the diary entry before scanning the next item. If the amount is wrong, edit that entry instead of adding the same product again. This keeps a successful scan from becoming a duplicate meal entry.
Barcode lookup is separate from importing a recipe or recognising a shopping receipt. Those workflows review different information and have their own allowances. You can always return to the ordinary food-search flow when scanning is not the right fit for an item.

Try it in your own routine
Open Eatper and try one step at a time. If something is unclear, the support page explains how to get help.