Am I supposed to receive a ticket as a PDF file / QR code / secret text string?

No. Go to the registration desk at TABConf and check-in with the email address you used to purchase the ticket to receive your wristband.

How can I sell or transfer my ticket to somebody else?

While you are responsible for facilitating the sale, we can help you transfer the ticket into someone else’s name. Just fill out the form on this page.