I'm imagining a scenario like this and wonder if it's technically doable and if it's a reasonable approach. Note that I'm a web programmer but not an iOS programmer. A 12-person team is out in the woods on a scientific scavenger hunt for bugs. They stay in wifi range of a Mac that's running a web server with a web app I'll write. Each person has an iPad or iPhone running mobile Safari. When one scavenger spots a gromphadorhina portentosa, he/she types its name in a web form and submits it. (Maybe we'll use abbreviations for the names!) The web app checks if a gromphadorhina portentosa has already been spotted and recorded, letting that person know. If it hasn't been spotted before, the scavenger takes a photo and collects other scientific information about the bug, which can stay on the local device until later. The purpose of the central web server is to prevent two scavengers from taking the time to record details about the same bug. Optimizations could include using AJAX to check for matches as the user types. Is this a practical way to do approach this problem? Are there smarter approaches I should also consider?