| Summary: | Cases of motorcycle theft by breaking mechanical key are still a serious problem in some countries. Therefore, this article discusses the development, implementation, and evaluation of a fingerprint-based ignition key for motorcycles. To prevent theft, a motorcycle can only be turned on by a registered fingerprint, and an alarm will ring if the sensor receives an unregistered fingerprint. The main components of this prototype were SEN0188 fingerprint sensor, Arduino Uno microcontroller, LM317 voltage regulator, and buzzer alarm module. The test results in shaded place showed that proposed key successfully ignited engine by 80% with a dry and clean thumb. However, if the thumb was oily or dirty, the success scanning rate was only 36% of 25 attempts. The proposed key also successfully activated a warning alarm if a fingerprint scan attempt fails three times in a row. Test results on potholes, bumpy, dusty, and puddles roads showed that no hardware has been disturbed or damaged. Therefore, this prototype has the potential to be further developed and implemented on a large scale in an effort to reduce motorcycle theft rates. © Heru Supriyono, Anugrah Adi Wijayanto, Rozita Jailani, Mohammad Osman Tokhi.
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