I guess it becomes more sophisticated as technology becomes more sophisticated.
My previous posting was in China, where technology is extremely important. In China, they will blend photos so that individuals can sit language tests for applicants who don't have a high level of English proficiency. This can be for permanent resident applications in the skilled-worker category, or it can be for student applications. It's highly sophisticated how they blend the photo so that when an individual comes to the testing site, and their identity is checked, the individual who is sitting the exam looks like the individual he or she is replacing.
There is a great deal of sophistication.