Bike Project

Hi I own a number of small to medium size bike rental premises within the UK. I am looking to have a system that allows end users to scan a QR code with their smartphone which allows them to hire the bike (the QR code would be placed on the bike frame). The system would ideally take a refundable deposit (or just take their bank details, in case the bike was damaged or stolen). It would also record the number of times the bike was hired and in which locations. I already have a website which i would also like to link to the app. Any ideas much appreciated Many Thanks Justin