An app for travelers.
Fixes the problem of getting credit cards blocked while you’re traveling. And, it fixes the the problem of having to make more than one (usually several) calls to notify the right people you’ll be away from home.
Two-step authentication would take care of any identity concerns. No different than logging into a client’s system with username, password and a randomly-generating pin from a security token like Google Authenticator.
If this exists, please disregard. If it does not, please take this idea and make millions.
And you’re welcome.