This. I've been wanting this sort of thing for ages. It could actually be extended into a very compelling product; imagine being able to issue not only read-on

This. I've been wanting this sort of thing for ages. It could actually be extended into a very compelling product; imagine being able to issue not only read-only tokens, but a token which authorizes the bearer to withdraw up to $100/month. Parents could issue such tokens to children for emergencies, or other such situations.