What comes after the key.
Your phone and watch are now your car key. A technician installs K1, and the key arrives on your phone.
Order now · $399All that’s left is a gesture.
K1 lives inside the car, out of sight. Your phone in your pocket. Your watch on your wrist. The click of a lock. You’re in.
Everything you need. Tap to explore.
We install it. Your phone gets the key.
Order online, pick a time, and a technician comes to wherever the car is parked. Shipping and installation are included.
Good to know: K1 needs one of your key fobs. The technician moves its circuit board inside K1. Your other fob stays as it is.
Does it fit? Look at your key.
If your key fob has lock and unlock buttons, K1 fits. Which one is yours?
Your phone opens and closes the car. Nothing to carry.
- Push‑to‑start
- Your phone opens and closes the car; the start button works as it always did. Nothing to carry.
- Key you insert and turn
- The key’s board moves into K1; its plastic body stays in the ignition. Nothing to carry either.
Your phone locks and unlocks the car. Starting still needs the key.
- Metal key with buttons
- Your phone locks and unlocks the car. Starting still needs the key — keep it in the car or your pocket. We say it before you buy.
Not sure which one you have? Send us a photo of your key — a real person answers.
Send a photo of your keyNo buttons on the key at all? Then K1 isn’t for that car — and we’d rather say so now.
Safety first
Three layers: an encrypted key for each car, a measured distance, timed authentication. With no authorized phone nearby, K1 keeps your key unpowered — for a thief, there is no key in the car.
Learn more about security →
Keynex K1
The device, a 12 V power cable, an OBD‑II cable and the app. Delivery and installation included.
or from $34 a month with Affirm
Everything you need to use your car is free, forever. More with Keynex Plus: $8.99 a month or $79 a year, first week free. What’s in Plus →
Phone and watch
iPhone and Android. Keynex on your wrist, too.
Installed at your door
Our installation partner comes to your car. Delivery and installation are included.
Easy returns
Returns within 30 days under our Return policy.
Real people to talk to
Write to support@keynex.com — a person answers.
Technical specifications
Questions, answered.
More in the FAQ →Which phones work with K1?
iPhone and Android. Keyless works over Bluetooth on any of them; with UWB in the phone the distance is measured to the inch. Keynex runs on your watch, too.
What happens to my key fob?
The technician moves the circuit board of one fob inside K1. Your other fob stays as it is.
What if I lose my phone?
Log into your Keynex account on another phone and the key comes back; Keynex works on one phone at a time, so the old one stops. No account? Email support and we block the car’s app access.
Does it fit my car?
Look at your key: if the fob has lock and unlock buttons, K1 fits. Push‑to‑start and insert‑and‑turn keys get the full experience; a metal key with buttons still starts the car by hand.
What if a guest’s key expires on the road?
The car stops opening when the key ends. They’re warned 15 minutes before and can ask you for more time from the app; you extend it from the notification.
I changed my phone. What now?
Log in on the new phone and your cars are back. Trips stay on the old phone.