You may download the complete development package for a selected processor and defer payment until your first installation. Each subsequent installation site will require a purchase of an activation key due at the time of installation - regardless of the number of workstations or registers. To purchase an activation key, you will need to provide us with the site's information that is specific for a selected processor. On the basis of such information, we will issue an activation key for the installation site. Look up the instructions in the development packages. Also be aware that once the activation key is issued, the fee is not refundable. Also, if you or your client switch processors or acquiring banks, your site's parameters will also change, and you will need to purchase a new activation key. If you plan to purchase installation licenses in one block, or would like to establish a discount plan, please contact us. If you need to contract development of the data entry screens for credit, debit, or check transactions, or complete payment modules, please request a quotation.