I could easily imagine a simple brain/computer interface - not even requiring an implant, just one of those helmet or headband things - where you are looking at a screen while thinking about a person that you remember. The AI starts tweaking the image on the screen and monitoring how closely your brain is registering a "match" to the image you're thinking of, until eventually it's spot on.
Won't guarantee that you remembered perfectly, of course. But no camera required for something like this.