* [[http://maniacdev.com/|tutorials, open source code examples, etc.]]
  * [[http://escoz.com/blog/demystifying-ios-certificates-and-provisioning-files/|certifications, provisioning profiles...]]

Push Notifications:

  * [[https://github.com/silverio/cordova-plugin-firebase|Cordova Plugin Firebase]]
  * [[https://developer.apple.com/library/content/documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/APNSOverview.html|Official APN documentation]]


\\


Background processes:

  * [[https://www.raywenderlich.com/143128/background-modes-tutorial-getting-started|background modes tutorial]]
  * [[https://developer.apple.com/library/content/documentation/iPhone/Conceptual/iPhoneOSProgrammingGuide/BackgroundExecution/BackgroundExecution.html|background execution official documentation]]

BLE:


  * [[https://medium.com/@yostane/getting-started-with-bluetooth-low-energy-on-ios-ada3090fc9cc|tutorial for iOS]]