I bought the S3XY buttons, but after installing in them I wasn't really happy with the security on the connection to the OBD dongle and removed it. It really has little in the way of protection, while it hides the bluetooth device while the car is off that's not really security against someone determined sniffing signals, then using it to open the doors, and while your driving someone in another car could trivially change your driving settings (e.g. turn off regen for you).
This was a year or so ago, maybe they've improved it, but given they launched this product with such major vulnerabilities I'm simply not going to trust it.
This was a year or so ago, maybe they've improved it, but given they launched this product with such major vulnerabilities I'm simply not going to trust it.