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The Automatic Activation is the way of create new users automatically without any need they interact with anybody. As from user's side the procedure is that he/she gets first an invite SMS useful to download the application PrivateGSM and then a configuration SMS which provides automatic configuration of the client itself. All the user has to do is follow the links into both the SMSes and it goes automatically on line.
Secure Message
Secure Message is a text message that can be sent and received only by using PrivateGSM and that shares the same communication infrastructure of Secure Call. The maximum length of each message is 160 character.
Provisioning
The Provisioning is the configuration needed for delivering both for the PrivateGSM application and its configuration and nowadays it's used by the Automatic Activation only.
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