| 摘要 |
<p>The invention relates to a method of invalidating web based tickets, coupons and vouchers in a graphical manner that displays directly on the screen of mobile phones enabling desk clerks or ticket checkers to verify if said web based tickets, coupons or vouchers have been invalidated just by looking at said web based tickets, coupons and vouchers when displayed directly on mobile phones. This method solves current challenges in relation to invalidation of web based tickets, coupons and vouchers in a fast, flexible, low cost and secure way.</p> |
