I think retailers and financial institutions should keep a close eye on bitcoin. The currency itself is flawed and may not survive. But some of the ideas behind it—such as having a decentralized “master ledger” of all previous transactions that can not be tampered with—will live on. Those ideas will be incorporated into payment methods that really could introduce a whole new era of electronic commerce. And as we’ve seen time and time again, when a new disruptive technology emerges, there’s no way to stuff that genie back in the bottle.