What does 'will call' mean regarding 24 KG tour tickets?

[secret love]

Hi everyone

I recently purchased my ticket to see Stevie's 24 Karat Gold show in California. I am Australian. I would have preferred to have my ticket mailed or even emailed to me. These options were not available, particularly posting the ticket, as Ticketmaster seem to have forgotten that a big wide world exists outside America and as such are not accepting overseas addresses.

So I went with the 'will call' option for my ticket.

What does 'will call' mean? How do I get my ticket? What identification will I need?

Thanks.

James