Does Petco admissions allow smart phone tickets or do you have to print them out?

I used my phone last night. Worked like a charm.

Yes you can use your phone

You can use both.

Smart phone tickets worked well.

Yes. You can use your phone to scan the code

Phone tix beez ax-sept-ib-ull

Both!

Tickets and barcodes purchased on line are available for view w/ Ballpark app

They do both. I had tickets on my phone. I bought them a hour before. The tickets were on my phone but no barcode showed. They printed them out for me.