After your Merchant Service Provider has set up your account, you will receive a Welcome Email with a temporary password.
You will then be able to use this temporary password with the email registered to your account to sign in to SwipeSimple for the first time. Note after first log in SwipeSimple will prompt you to create your own password.
If you're having trouble locating the welcome email, it is sent from noreply@swipesimple.com.