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Last update 07-09-2024

An important feature of all hardware electronics being designed and prototyped is the personal "CAR KEY". This is a customizable and programmable nano sim card that has stored a custom token access key up to 256 bytes. This access key is also present on any other module of the car and is constantly verified and checked for changes.

This security feature allows adding hardware electronics and modules only by the owner of the car and with the access key. A mandatory requirement for those who love their cars and also "Do it Yourself" #DIY type of electronics. The nano sim card can be programmed using the "CAR Key" Device connected to a smartphone, tablet, or Laptop computer. (more information about this soon). All control modules need to have installed a nano sim card with a "Car Key" defined by the owner of the car or else the module won't work. Any installation of unauthorized hardware electronics and modules will not be able to execute commands on the communications network and can disable normal operation and running of the car.

It is not possible to update/ change a "Car Key" remotely or using the vehicle's communications network. The only way possible to update or change a "Car Key" is by physically removing the nano sim card from each module and then programming it using a compatible "Car Key Device" and software App.

_{Figure 2 - Universal Key I'll be using to lock and unlock a Volvo P2}

Buy a conventional universal Car Key

Another important function of this "Car Key" is in the ability of a car owner to change, frequently, for instance, it can change every day, how radio frequency operates and wireless access happens to his/her vehicle when using the Key Fob to open or start the car. This nano sim card is also installed on the "Key Fob" that opens and starts the vehicle and is frequently subject to wireless attacks and hacking. By having an easy-to-replace customizable access key, the owner is able to change how the vehicle is wirelessly connected, making life harder for thieves and curious unauthorized people looking to get inside.

Flipper Zero is a portable multi-tool for pen-testers and geeks in a toy-like body. It loves hacking digital stuff, such as radio protocols, access control systems, hardware, and more. It's fully open-source and customizable, so you can extend it in whatever way you like.

Go to the Flipper Devices Project here on Github

Ready to ditch the bulky keyring?
Flipper Zero is your new access solution, enabling you to copy and store all your key fobs and access cards digitally. Tap, store, and go—it's that simple. Perfect for tech enthusiasts and professionals who value efficiency and security. Unlock a lighter, smarter way to move through your day.

Buy a flipper Zero

I'll be designing custom hardware electronics made to fit a universal car key fob (see Figure 2 above) capable of running a modified firmware of the Flipper Zero device. This means the owner of a Volvo P2 is able to store all electronic and digital keys in the custom-made key fob, decluttering your pockets of unnecessary bulky keyrings.

• the ability of a car owner to change, at the end of the day, how the radio frequency operates and wireless access is made when using a Key Fob
• Enables installation of custom control modules and even DIY control modules only by the owner of a vehicle, alternatively, the owner can order fabrication of custom hardware electronics specific to his\her vehicle 🚑.
• The "Car Key" cannot be updated, or changed, using the control module where is installed