Helcim.js greatly reduces your scope of security and PCI compliance, by establishing a secure connection between the cardholder's web browser and the Helcim API.
In test-mode, an SSL certificate is not required to be present on your checkout page. However, you need to tell Helcim.js to skip the SSL verification by creating an input field with id=test value=1.
In production mode, Helcim.js will verify that an SSL is present, or return an error.
Updated 2 months ago