It seems pretty obvious to me at least that the underlying "e-reader" software of any Apple device will be a browser's rendering engine, and that the standards involved will include HTML, CSS, and Javascript.

I don't want to beat a dying horse, but I would love to see TripIt support arbitrary OpenID providers besides Google. To fully realize the vision that you describe here, you need to be agnostic to the service providers that people choose to use. Therefore, once again, I'd love to be able to use my own OpenID to access my TripIt account, in the same way that I use my OpenID to sign this comment.

I generally support this line of thinking (i.e. minimal disclosure) but the problem is that you lack economic clout to make the argument to get such a scheme adopted widely — especially in digital networked systems (i.e. social web sites or applications). It may take government intervention to force such a system, but as it turns out — a card that provides minimum disclosure in practice is often less useful than you might hope — and the bearer is often requested (or demanded) to provide additional information — name, provenance, email address, and so on — to receive basic levels of service. It has less to do with identity and authentication than it does the recognition of economic value of knowing who you are and how to contact you after you're gone.

So, I use OpenID to access my Blinksale account. Seems like that's not supported with Invoicie? Can has OAuth?