1. Enable the Commerce eWAY module from the modules page.
  2. Ensure all required dependices are resolved including:
    1. Libraries Module
    2. NuSOAP Client
  3. Create a Rule which will save the user account data.
  4. Edit the eWAY Payment method from http://example.com/?q=admin/commerce/config/payment-methods
  5. Edit the action and select "Token Payments" under eWAY mode
  6. Create a Rule which will save the user account data.
    1. Go to: http://example.com/?q=admin/config/workflow/rules and add a new rule.
    2. Select the event: "Completing the checkout process"
    3. Add a condition with "Data comparison" and select "commerce-order:uid" for the data to compare "equal" as the compare method and "0" as the value.
    4. Negate the condition
    5. Add a action "Setup for eWAY token billing" with the data selector as the user id. "site:current-user"

If you have any issues getting token payments to work after following these instructions please file a report in the issue queue.