How to genarate QR code after purchase

-- HikaShop version -- : 2.7.0
-- Joomla version -- : 3.4.8
-- PHP version -- : 5.4.45

after go though the demo and documentation still lost on how this should be done by using hikaserial

Original idea like this
1.) User purchase a product (cafe meal coupon)
2.) A QR code is genarated and send to user/ download (not sure which is applicable)
3.) Cafe owner scan the QR code and the coupon will be marked as used and can not redeemed again
4.) Hikaserial owner able to list which product have higher serial consumed and know how much to pay back to cafe owner

2> how can we achieve the dynamic download? we follow the step and do it in demo but doesn't seem it have option to see the genarated qr code in control panel

We have finally managed to "attached serial" in the order notification email

however, the genarated QRcode seem like not responding to QR code scanner, is there anywhere to verify the QRcode can work ? (we have tried neoreader qr code scanner and wechat built in qr code scanner)

And also, is it possible to let customer reprint the ticket in order history? (some hotmail and gmail user may not receive this kind of email)

Jerome wrote: Hi,

If you want to let the customer re-download the attach serial ; best is to add it as product file attachment.
So the customer will have a file download with his order and will be able to download the QRcode.

About the QRCode ; I'm quite sure that the encoding is working perfectly but you need to embed some correct content if you want to have some "effects" with a QRCode scanner.
Like putting an URL.

Regards,

Dear Jerome

Thanks for answering, we have found out that when the QR code size larger than 4, it will become unreadable by QR code scanner

after we change it back to 2 it works

any documentation to do the file download attached serial ?
"So the customer will have a file download with his order and will be able to download the QRcode."

not quite understand on this part, do you mean to enable the setting attached as download?

can not find file path parameter......do you mean image path? images\ticket.png ?