Secondary camera – definition


  • Modern smartphones frequently have a front-facing camera, also referred to as a “selfie cam,” that is the secondary camera.
  • The secondary camera uses the same technological components as the primary camera described above.
  • Most frequently, self portraits and group photos are taken with the front-facing camera for social media and video calling.
  • The front-facing cameras also integrate with additional technologies to enable face-detection for smart phone security.
  • Since the release of Ice Cream Sandwich, version 4.0 of Android, on October 19, 2011, you may use a crude kind of face recognition called Face Unlock to unlock your phone. Yet, security has never been touted in connection with this.
  • The first Samsung phone to include iris scanning to provide security was the Samsung Galaxy Note 7 in September 2017.
  • The Samsung Galaxy Note 7 was the first Samsung phone to include iris scanning as a safe way to unlock a phone in September 2017.

Apple introduced the iPhone X in September 2017, replacing Touch ID, the company’s fingerprint biometric security, with Face ID.

FaceID is made even more reliable since, in conjunction with the new technology, “depth” can also be detected. This has the side effect of making Apple one of the first manufacturers to release 3D avatars or Animoji that can record a user’s voice and facial expressions.