Here is another smart gadget that connects your phone to your car, allowing you to use it as your car key. ONEKEY’s KETO device uses Bluetooth and inaudible soundwave authentication for secure communication. You will be able to share keys with your family or guests temporarily or block access when you want.
The KETO mobile app is available for iOS/Android devices. You can access multiple cars on one device. The device uses Bluetooth 5.0 and lasts up to 30 days on standby on battery.[where to get it]