The problem
Generation from one image, or from several near-identical ones, gives the model a single view of a face. Everything else is guessed, and guesses drift. The result looks like a stranger wearing a bit of you.
The check
You upload two or more normal photos, not selfies. The app checks them against five poses: straight on, turned left, turned right, and the two profiles. It needs at least two covered before it generates anything. If poses are missing, it tells you before you spend credits.
Why it is a gate, not a suggestion
Telling users to "upload varied photos" does not work. Most uploads are three similar front-facing shots. Measuring the pose and reporting what is missing gives a clear action: add a photo from another angle.
Trade-offs
It adds friction before the first result.
It cannot guarantee likeness. It reduces one cause of drift.
It cannot fix poor source photos.
What comes after
You pick one of more than 4,500 scenes, or describe your own, and photos come back in minutes. CMeIn's stated aim is that the face stays yours, with no smoothing or reshaping. Check any result against your own photos.