Hello,
HikaSerial have a tutorial documentation page specially for that kind of usage :
www.hikashop.com/support/documentation/2...ticket-tutorial.html
In order to have an immediate validation, the system is using QRcode (encoding an URL) and smartphones.
The smartphone can scan the QRCode, open the webpage and indicate if the serial is good or not.
And because it uses the website, the ticket cannot be used several time because the first time it will be scan, it will be mark as "used" and won't be available anymore.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.