markb1
Active Member
Not directly, no. But it's easily found online that any Lightning accessory requires it. Most CarPlay has been implemented using USB so far. There are some Bluetooth versions. I can also tell you that any custom Bluetooth accessory which does not conform to a small set of profiles (mostly just network bridges, HID, streaming audio, and handsfree devices) requires the chip as well (this being from my own personal experience as an engineer researching this a few years ago for a product I was developing). You can see the Bluetooth list at Bluetooth profiles that iOS supports, which shows there is a "WiAP" protocol for devices that conform to MFi.
One thing I found was that Apple added software authentication to HomeKit only last year:
How HomeKit's software authentication works
HomeKit works over either WiFi or Bluetooth. (As an aside, wireless CarPlay negotiates over Bluetooth, and then the data is streamed over WiFi.)
Assuming that CarPlay does require an authentication chip, it's possible Apple would be open to relaxing that requirement at Tesla's request, in order to get CarPlay deployed to the whole fleet. I'm not sure how likely, but possible!
There are some other technical requirements, such as a hardware h.264 decoder with support for a certain profile, and a USB port than can be reversed so the iPhone can be the host and the car can be the device. I have no idea if our cars have those capabilities.
But even if Tesla would just roll out CarPlay to new cars, that would be something. Virtually every other car manufacturer supports CarPlay on at least some models! Tesla, on the other hand, made a fart app.