Resolve "As a user, I want to know that I must validate the certificate to allow adb to work with my device"
How to test ?
Start the installer, follow the step until you reach the device detection's step.
Check that the picture and instruction about RSA fingerprint is shown.
3.a plug a compatible device and wait it detect the device. When it's detected you should see a message telling that the a compatible device has been found. The RSA fingerprint's picture and instruction shouldn't be here anymore
3.b Plug an incompatible device: When it detect the phone, it must tell you it has detected a device which can't be flashed. The RSA fingerprint's shouldn't instruction & picture be here anymore. If you click on the "try with another device" button, picture and instruction appears again.