I'm actually working on an app that would use tripit's API (since they have a pretty solid base to start from), and then we're building features in on top of that functionality.

I'm starting by adding the ability to store loyalty card info, travel documents (or for backup purposes, pictures of said docs), and vaccination info. The idea is to make this a smart "wallet" for all your travel information, and based on the current or upcoming trip, show you the relevant cards and info.

Does my idea suck? is this a waste of time? Or do you think this could be useful/what would you change/add?

I'm not linking to my site since I don't want to come off as spammy (and since I'm new here), but I'd love any thoughts.