Coupon recommendation app (android) for stores using iBeacons. Code in Java (android side) and PHP (server side). Server exists to ensure that the same person does not receive the same coupon multiple times. I have tried my best to make the app as non intrusive as possible. iBeacons used: Jaalee iBeacons (Yeah! That's a company name). Kindly move the files from php folder into the htdocs folder on your server.