I'm thinking of creating a water fountain for a school or a company that when you walk up to it, it can automatically start dispensing about 250ml of water to the employee or student. This would be possible by rfid scanner built into the water fountain which collaborates with the employee's id or student id. If the user would require more water, then they would pass their id over the sensor. I also want to add the feature of a database which records the amount of water a user would drink,...