I am looking for information about barcode scanning for customer invoices. can it be done in QBO?

Hi tesaccts1,

Thanks for reaching out here.  QuickBooks Online Canada doesn't currently have barcode scanning.  However, if you'd like to provide a suggestion to our Development Team for future updates, you can submit your recommendation by going to > Settings ⚙ > Feedback.  In the interim, you can review third party apps for the best fit for your business needs.

If any other questions come to mind, please don't hesitate to reach back out.  We'd love to help!