Request a username and password:

Request just a password:

Request just a password and automatically process the result:

Request secured authentication credentials:

Provide initial values for some of the dialog fields:

Specify a function to process the resulting Association:

Use custom key names, specifying optional initial values and masking:

Use SystemCredentialKey"name" to securely store the dialog fields between sessions. The data is stored under the provided name:

The data is remembered in secure storage under the given name:

Use FormObject for other control types, optional fields, and so on:

Use AuthenticationDialog in a standalone Wolfram Language kernel:

$ ./WolframKernel
Mathematica 13.2.0 Kernel for Mac OS X x86 (64-bit)
Copyright 1988-2022 Wolfram Research, Inc.

In[1]:= AuthenticationDialog[]                                                            
Username: matt                                                                            
Password: *****                                                                           

Out[1]= <|Username -> matt, Password -> 12345|>

Use AuthenticationDialog in wolframscript:

$ wolframscript -code "AuthenticationDialog[]"
Username: matt
Password: *****
<|Username -> matt, Password -> 12345|>

$ 

The "UsernamePassword" AuthenticationDialog has an additional feature if used with the SystemCredentialKey option. The fields are stored for each username previously provided:

A new instance of the dialog is automatically filled with the last-used credentials. The password field is automatically filled after selecting an entry from the drop-down menu:

The entries for all usernames are stored in secure storage with names derived from the base name:

Use AuthenticationDialog as a setting for Authentication, to prompt for credentials when needed:

Use AuthenticationDialog to request a password for other functions, like Encrypt and Decrypt:

Preemptive controls cannot block the kernel's evaluation queue:

Always call AuthenticationDialog from a queued evaluation:

AuthenticationDialog blocks the kernel's evaluation queue, preventing asynchronous dynamics from rendering:

Only synchronous dynamics will render while the kernel's evaluation queue is blocked:

AuthenticationDialog will use any stored credentials that match the dialog's keys for the given domain:

If another unrelated authentication dialog uses the same SystemCredentialKey, its old values will be overwritten:

SystemCredentialKey is ignored for any AuthenticationDialog that uses a FormObject:

SystemCredentialKey is ignored for any AuthenticationDialog in a standalone Wolfram Language kernel:

> wolfram
Mathematica 13.2.0 Kernel for Microsoft Windows (64-bit)
Copyright 1988-2022 Wolfram Research, Inc.

In[1]:= AuthenticationDialog["Password", SystemCredentialKey->"Domain"]                                        Password: ***                                                                                                                                                                                                                 Out[1]= <|Password -> 123|>