On occasions where I drive somewhere where I part company with my street clothes (e.g. running training in a forest; swimming in a gravel pit) a problem is having to take along a car key (running: sports clothing manufacturers apparently don’t put any thought into pockets where keys can be stored really, really safely and not be drenched in sweat; swimming: unlike public pools, no lockers available, plus you cannot take a car key with electronics into the water).
One obvious solution would be a keypad for access and starter control - you cannot lose or damage a password. But I never heard of keypads being used in cars.
So, does any manufacturer offer keypad user authorization? Or did any offer keypads but customers demurred?