Risks
| Risk | Mitigation Strategy |
| Someone else breathes into key instead | Unsupported user behavior |
| Short battery life | Make system low-power consumption or charge it on car |
| Bluetooth failure | Test multiple times to make sure it works |
| Sensor inaccuracy | Test and tune multiple times |
| User tries to fake the input by using a spray can, etc. | Add a temperature sensor or other sensors to detect faked input |
| Unable to install device into real car | Use motor to simulate ignition, disable the motor from turning to simulate disabling the car from starting |
| Device is vulnerable to breaking apart | Solder parts together carefully and put device in plastic encasing |