Ex-Microsoft exec's startup launches â¹45,000 door lock
US-based startup Otto, founded by former Microsoft executive Sam Jadallah, has launched a smart door lock priced at about â¹45,000. The Wi-Fi-enabled lock has no keyhole and can be unlocked by a single tap from users' connected smartphones or by manually entering a 4-digit PIN. The lock's battery is claimed to last for four months and also has additional back-ups.