Signature Pad- Supported Models
Signature pads will allow you to capture digital signatures for receipts if you do not have a terminal such as the PAX S300 or Ingenico ISC250. Additionally, you can capture signatures for recurring and stored cards 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 your Merchant Services support team.