Why can't I scan barcodes or nutrition labels?

If when trying to scan a barcode or nutrition label in MacrosFirst you see a black screen instead of the camera feed, then odds are that your MacrosFirst app has not been granted access to the camera permission on your phone. This is easy to fix in your phone settings.

iPhone

1. Open the Settings app

2. Pull down to show the search box and search for "MacrosFirst"

3. Tap on the MacrosFirst search result and enable the Camera permission.

Android

1. Open the Settings app

2. Search for "MacrosFirst"

3. Tap the MacrosFirst App search result

4. Tap Permissions

5. Confirm that the Camera permission is Allow only while using the app.