This bike-sharing service is a joint venture between German company Nextbike and local provider Byky. It operates a fleet of bikes in the Dubai Marina, Downtown Dubai and on Palm Jumeirah. Riding a bike requires online registration first. To unlock a bike, you need to call the hotline and type in the bike's ID number. You'll then be sent a code to open the combination lock.
Bikes must be returned to another station. See the website for the nitty gritty.