If I am (hypothetically) writing an ebook that refers to certain publicly traded companies, and I want, as in the wall st journal, to display a small ticker symbol showing the current value of the stock next to each company name, is there a way for me to connect to some service that requires a to logon?
To my knowledge, there is no way to do things like redirects in any epub reader (or library system such as safari), but is there some way to accomplish this basic functionality?
what I am envisioning is some form of ajax request that will refresh periodically, at a minimum when the user opens the ebook, possibly more frequently. Would be ideal to have a way to cache the logon credentials so repeated entering of user/pw would not be necessary.
My main question is to determine if such a functionality is just flat-out impossible; I realize there will be wide differences in features supported by various readers and library systems.