"A hybrid solution that takes the best parts of iOS's one-by-one acceptance and Android's expressed and obvious intents seems like a proper model here. In fact, Apple has many of the pieces in place elsewhere." This is a big issue. Nor Android's model (just list a bunch of confusing permissions), nor Apple's model (individual modal dialogs for each permission) is particularly workable - I doubt regular users check them on Android before installing an application, and in the case of iOS, Apple didn't think it was necessary to secure the address book, so every application has access to it without alerting users. Justin Williams .