if Tesla has thought about it?
The answer to this is almost always, 'yes'. In particular, Elon has stated that security is a prime goal, as failures are likely to kill the company. I am pretty sure he is likely to have assigned competent person to the job. How careful would you be if it was your 10 Billion dollars?
No matter what, as soon as you need an instruction manual for something as simple as entering a vehicle with a key, there is something wrong imho.
You just think that since you grew up with keys, that they don't require a manual. I assure you in 20 years you will need to explain them to the youth of the day. And they will look at you like you grew antlers.
Thank you kindly.