The issue focused on whether or not people were able to identify which of two images was actually taken by an iPhone 6s or 6s Plus using the camera app called iPhoto.

The issue was highlighted when a reader sent us a photo from his phone showing that he could identify the phone by looking at the photo taken by the device's sensor.

However, the reader, a former Microsoft employee, said that the iPhoto app's ability was flawed in that people had no way of verifying which of