A flash SMS (also called Class 0 SMS) is a type of SMS message that gets displayed directly on the end-users phone screen and usually does not get automatically stored.
Most Airlock IAM features using SMS support the flash SMS message type.
- In mTAN authentication, Airlock IAM distinguishes the following settings:
- Flash SMS on or off depending on a flag stored in the user record.
- Flash SMS always on
- Flash SMS always off
Note that not all SMS providers support flash SMS.
Note that it is up to the mobile phone how to display flash SMS.