At leas that is what Elon said on Twitter:
“All X & S will soon work with no key if your phone pairs w Bluetooth, signal strength is high & you enable feature”
Tweet
I was reading on Reddit and seems like the actual key fob (since sept 2016) also uses Bluetooth Tesla starts shipping new key fob with Bluetooth Low Energy (BLE) so I assume both the S and the X have the appropriate antennas to power using the phone as the key.
“All X & S will soon work with no key if your phone pairs w Bluetooth, signal strength is high & you enable feature”
Tweet
I was reading on Reddit and seems like the actual key fob (since sept 2016) also uses Bluetooth Tesla starts shipping new key fob with Bluetooth Low Energy (BLE) so I assume both the S and the X have the appropriate antennas to power using the phone as the key.
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