If you're a Tesla owner, it's probably pretty rare that you use your vehicle's key cards to get in and start your EV. More likely than not, you're using your phone as a key, but it's still probably a good idea to have that physical backup in case your phone is on the fritz, dead or the car -- for whatever reason -- just doesn't want to connect to it.
All Teslas come with a couple of credit card-sized key cards that are meant to act as backups, but Tesla has apparently removed the mention of them being included with new vehicles from the owners' manuals of both the Model 3 and Model Y following the release of the cheaper (and far worse) Standard trim levels of both vehicles. The story was first noticed by the Tesla news blog, Not A Tesla App, and has since been reported by InsideEVs. This wouldn't be the first time Tesla quietly removed wording from an owner's manual as a precursor to actually getting rid of a feature.