Yes you can, You would need to be enrolled in our ecommerce program. This enables to use the your computer as your terminal. You can do Sales, Refund, Void, on you computer. There are some restrictions for certain businesses, but Contact our Team during business hours of 9am to 6pm at (773) 465-1128, you can Fax us (773) 465-8922, or email us at email@example.com. We will be happy to assist you in any way we can.