System Setup For Astro Advanced Messaging Solution; Two-Factor Authentication - Motorola APX 4000 User Manual

The radio with Two-Factor capabilities are backward compatible
with the existing device registration system and TMS servers.
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System Setup for ASTRO Advanced Messaging
Solution
Your user name, unit ID and password all need to be
provisioned in PremierOne™. Your user account in PremierOne
needs to be linked to an RSA account specifying a token to be
used with the Two-Factor passcode.
The radios caches the user name, unit ID and or Single Factor
password in the codeplug, this allows the radio to automatically
log in to use Single Factor authentication upon power up or
mode change. The Two-Factor passcode is not stored in the
codeplug. You can upgrade the Single Factor session to a Two-
Factor session by entering the Two-Factor passcode only. After
an interruption (for example mode change, DSR switch over,
power loss) the radio is capable of restoring the active session
in its current state as long as the session is active in the server .
Note: Power loss and power down are different activities,
power down occurs when the user intentionally powers
off the radio, power loss is when the battery dies or is
removed from the unit.
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Two-Factor Authentication

Two-Factor Authentication is an extension of existing ARS and
TMS operation. This feature allows you to authenticate yourself
with a username, unit ID, password and passcode.
The purpose of this feature is to allow the sender of a text
message to address a specific user of the radio, so the
message is delivered to the user, not to the radio which may
have any user using it at the time.
Secondly, this feature supports query authentication
requirements so the query service knows which user originated
a query.
You can still send text messages without logging in as a user.
The user login feature only enables the recipient of your
message to identify you as the sender by assigning a username
to your message.
Note: A predefined username that's set more than the
maximum allowed characters is an invalid name.