Hey deb,
Thanks for reaching out to us!
Our Tickets plugins inherit all of the payment processing functionalities offered by the main plugin that you would like to be the Tickets add-on for. For example, our most popular is WooCommerce Tickets and all the payment processing and cart functionality is completely managed by WooCommerce.
That being said, I’m not aware of any on-site, card reading capabilities built for WooCommerce. A quick search turned up a couple of links that could be helpful to you:
http://ideas.woothemes.com/forums/133476-woocommerce/suggestions/2231419-square
http://stackoverflow.com/questions/23408197/woocommerce-and-paypal-here-integration
Let me know if this helps. If you have any further questions, please don’t hesitate to ask.
Thanks!