Over-the-air programming (OTA) refers to various methods of distributing new software, configuration settings, and even updating encryption keys to devices like cellphones, set-top boxes or secure voice communication equipment (encrypted 2-way radios).
One important feature of OTA is that one central location can send an update to all the users, who are unable to refuse, defeat, or alter that update, and that the update applies immediately to everyone on the channel.
Multi-Factor Authentication Multi-factor authentication is a stronger method for identifying users.
After you submit your username and password, the system prompts you to select a method to deliver a one-time passcode, which can be an email, SMS message, or voice response.
A screen will appear stating that the installation has been completed. To check your software version from the home screen: Updating while roaming You won't receive a software update notice if you're roaming.A user could "refuse" OTA but the "channel manager" could also "kick them off" the channel automatically.In the context of the mobile content world these include over-the-air service provisioning (OTASP), over-the-air provisioning (OTAP) or over-the-air parameter administration (OTAPA), or provisioning handsets with the necessary settings with which to access services such as WAP or MMS.Motes are often located in places that are either remote or difficult to access.As an example, Libelium has implemented a smart and easy-to-use OTA programming system for Zig Bee WSN devices.You'll need to be connected to Wi-Fi to update your device while roaming.