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[markplus]

Would it be possible to direct those who scan to login before reading the data entered in the barcode? I should create barcodes only for authorized people but I don't know how to do it

[lucacastelnuovo]

Hi @markplus,

I'm not affiliated with this package but I think I can give you some advice.
It seems to me as if you have two flows in your description.

Would it be possible to direct those who scan to login before reading the data entered in the barcode?

1. Generate barcode
2. Show barcode (on a webpage or wherever)
3. Have an user scan the barcode (using a phone or barcodescanner, etc.)
4. Redirect user back to your webpage
5. Request user to authenticate
6. After successful authentication display data

I should create barcodes only for authorized people but I don't know how to do it

1. Request user to authenticate
2. Generate barcode
3. Show barcode (on a webpage or wherever) to authenticated user

What are you trying to achieve, as these flows differ quite a bit from each other.

Also I should note that both flows don't have much to do with this package.
This package only concerns itself with generating barcodes.