Build a custom Point of Sale (POS) application with HTML and JavaScript using Bluefin’s SaaSConex JavaScript SDK and Payment Terminal management service.

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SaaS Point of Sale app

SaaSConex's JavaScript SDK and Payment Terminal management web service allows your organization the ability to build intuitive Point of Sale (POS) software with HTML and JavaScript on your own SaaS platform.

JavaScript SDK

SaaSConex's JavaScript SDK communicates directly to Bluefin’s payment terminal from your app. It offers a rich set of functions that allow you to process transactions, configure terminal settings, customize display dialogs, and more.

Payment Terminal Management

Business relationships are easily managed by creating partner, sub-partner and client accounts within the payment terminals of SaaSConex.


Our REST APIs allow you to manage users, sub-partners, clients, devices, view logs, and view billing information.


A sandbox native to Bluefin’s SaaSConex service allows you to evaluate your POS app, JavaScript code and test the SDK's functionality. The native sandbox also showcases the functionality of Bluefin’s SaaSConex.

The SaaSConex service is provided by Bluefin. If you want to trial SaaSConex or if you would like to learn more about our other Security and Payments services visit our Contact Us page.

SaaSConex in the Browser

Diagram of SaaSConex

The SaaSConex web service maintains knowledge of a Payment Terminal's local network information (ie: its IP address) and assigns a domain name to each terminal. The domain name is backed up with a valid SSL certificate on the terminal. The SSL cert allows our JavaScript SDK and your SaaS application to securely communicate with the Payment terminal over HTTPS.

Bluefin Payment Terminals process their transactions on the PayConex payment gateway, a state-of-the-art payment platform offering all payment products for U.S. and Canadian processing. PayConex's secure payment gateway services are backed by our PCI-validated point-to-point encryption (P2PE) service. PayConex processes credit and debit cards, ACH and E-Checks, with support for recurring and subscription payments.

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