In Europe there’s automated passport control gates with face recognition in several airports. These are based on the photo stored on passport. Not sure how automatic these are - would be of course possible to have a human there looking at the photos.
According to quick search there’s no specific resolution requirement for the image in biometric passport, but size should be min 12kB to have recognizable image.
According to quick search there’s no specific resolution requirement for the image in biometric passport, but size should be min 12kB to have recognizable image.
https://readid.com/blog/face-images-in-ePassports