In A World Where Anal Identification Is Now A Given

In 20XX, as the security vulnerabilities of fingerprint and facial recognition are questioned, 'anal authentication' using the asshole, which is never shown to others in daily life, emerges... No unnecessary mosaics with front coverings! A lewd and practical system where you can see plenty of close-up assholes in everyday situations! Includes farts, gaping assholes, and anal creampies!