Unlocking A Tesla With A Samsung Galaxy Watch

[as400]

Sometimes I go out to get something from my car and doh! realise half way there I have forgotten my phone.

My Samsung Galaxy 5 Pro watch has both NFC/Bluetooth can this be used without adding a third party app to unlock drive the car?

Anyone accomplished this?.....would love to find a guide.

 

[meavydev]

Sometimes I go out to get something from my car and doh! realise half way there I have forgotten my phone.

My Samsung Galaxy 5 Pro watch has both NFC/Bluetooth can this be used without adding a third party app to unlock drive the car?

Anyone accomplished this?.....would love to find a guide.

I don't have a Galaxy Watch 5 Pro, but my guess is you need a third party app. After all the phone key requires the Tesla app to be running
As far as NFC goes, there are a load of different tags and security protections so you can't just copy a NFC key and my guess is that the car requires a specific NFC tag before it can be added as a key.
There are free Android apps for NFC reading / writing, so you can look at apps like NFC Tools.
Just for background i am an Android developer and have worked with both Bluetooth and NFC.

 

[spdpsba]

Samsung Galaxy 5 Pro watch has both NFC/Bluetooth can this be used without adding a third party app to unlock drive the car?

It looks like it is possible because of NFC. Add watch just like a ring or fob. Follow the link for setting up key fob for instructions.

https://www.tesla.com/en_gb/support/tesla-vehicle-keys

There is a video of this guy opening with galaxy. Update on this page once done.

 

[speedyranger74]

It looks like it is possible because of NFC. Add watch just like a ring or fob. Follow the link for setting up key fob for instructions.

https://www.tesla.com/en_gb/support/tesla-vehicle-keys

There is a video of this guy opening with galaxy. Update on this page once done.

It's using an app.

 

[M00cow]

Tessie app also includes the Galaxy watch add-on.
It absolutely obliterates the watch battery though, I found so don't really see the point.

 

[meavydev]

This is what Android uses to emulate an NFC card and why you need an app: Host-based card emulation overview | Connectivity | Android Developers
It's not too tricky to emulate, but Wear OS does mean it will have battery implications, so any app should do as little work as possible...

 

[tzgator]

Hi @meavydev , thanks for that link above! Do you happen to know if the Tesla Android implementation of NCF uses a Secure Element? Or is it using Host Based?

Thank you!

 

[meavydev]

Hi @meavydev , thanks for that link above! Do you happen to know if the Tesla Android implementation of NCF uses a Secure Element? Or is it using Host Based?

Thank you!

The Tesla NFC key reads as this screenshot from NFC tools, so given it has JCOP then it has a secure element.
My guess is you would need a secure element in the HCE.
Of course the Tesla app as a key is mainly using Bluetooth, although the Highland cars with iOS iPhone 11 and above can also use UWB.
I've never tried using Android as a Tesla NFC key, so I don't know for sure.

 

[tzgator]

The Tesla NFC key reads as this screenshot from NFC tools, so given it has JCOP then it has a secure element.
My guess is you would need a secure element in the HCE.
Of course the Tesla app as a key is mainly using Bluetooth, although the Highland cars with iOS iPhone 11 and above can also use UWB.
I've never tried using Android as a Tesla NFC key, so I don't know for sure.

Thank you for the details and explanation, I appreciate it!