Topaz Signature Pads - Supported Models
Signature pads will allow you to capture digital signatures for receipts if you do not have an EMV terminal. Additionally, you can capture signatures for recurring and stored card authorizations.
Topaz site: http://www.topazsystems.com/standardpads.html
Once you purchase the signature pad, follow these instructions to install it. Signature Pad Installation Instructions
If any assistance is required, please reach out to Support.