In Japan, drunk bike riding is considered dangerous, and the cause of injuries and accidents. Furthermore, just like drunk driving, it is against the Japanese law. However, many people are not aware about the dangers and illegality compared to drunk driving. That’s why KOOWHO recently presented ALCOHO-LOCK, a totally new solution consisting of a lock and exclusive application. When cyclists are about to unlock, the alcohol density level will be checked by breathing into the lock. In case alcohol is detected from cyclist’s breath, an alert is automatically sent to the pre-registered partner’s smartphone. The partner can stop their beloved cyclist from riding bike.