New to Helcim.js 2.0 is the configuration. This allows you to control your Helcim.js setting on the back-end (through the Helcim Commerce administration), removing the ability for the end-user to alter your desired settings. You can set a transaction size minimum to deter card-testing on your checkout page, enable amount hashing (see below), decide whether transactions should be purchases, pre-auths or verifications-only and determine whether the configuration is set to test-mode or production.