I issue fishing day tickets to members and guests of our fishing club. I currently email them a pdf and ask them to write in the fishing date before they fish. The club web site is WordPress.
I am wondering if there is better way of doing this to stop people repeatedly printing off the ticket and using it a number times.
All I can currently think of is that they enter the day and date they are going to fish on an online form which will make it harder for them to repeatedly use a day ticket.
Grateful if anyone any ideas how best I can tighten up the security of our day tickets with our WordPress web site. Huge thanks for ideas anyone may have.