Reword intro on 2fa/mobileauth

Author: alice-hannah

vignettes/authentication.Rmd

@@ -15,11 +15,13 @@ knitr::opts_chunk$set(
 
 ## How authentication works
 
-The first time you send a request, the API requires your Objective Connect user email address and password to authenticate. This is called "Basic" authentication.
+The first time you send a request, the API requires your Objective Connect user email address and password to authenticate.
 
-Each successful response from the API includes a token. This token can then be used to authenticate subsequent requests in your session, negating the need to repeatedly supply your email address and password. This is called "Session" authentication.
+Each successful response from the API includes a token. This token can then be used to authenticate subsequent requests in your session, negating the need to repeatedly supply your email address and password.
 
-The rest of this article details how to manage authentication when using the `objr` package, including handling [multi-factor authentication](#mfa) (including two-factor and mobile authentication).
+Depending on your account and/or workspace settings, you may also be required to use two-factor or mobile authentication.
+
+The rest of this article details how to manage authentication when using the `objr` package.
 
 
 ## First request