Zusammenfassung
A major conventional car key is the mechanical key. When users inserted the key into a cylinder mechanical
key and turn, users can unlock. The mechanical key may be able to be worn away for physical contact. And it
may be impossible to use. Further the mechanical key may be damaged or destroyed by mischief. So a keyless
entry system has been developed. The keyless entry system locks and unlocks using the infrared ray and radio
waves communication. The keyless entry system does not require physical contacts. Therefore, the
possibilities of damage due to mischief and be worn away are fell. However, the transmission ranges of
infrared ray and radio waves communication are not clear. Submitting data might be tapped to the malicious
people. If the information is tapped, then you have theft of the car and the risk of car break.
Nutzer