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Google is envisioning a future in which email and online banking accounts are safer thanks to technology that would add a physical component to security protection. Members of the Google security team reportedly will publish a paper in next month's IEEE Security & Privacy Magazine examining scenarios in which passwords would be a thing of the past. Instead, users would turn to some sort of hardware device to unlock email, online shopping or banking accounts. The article details one device, a Yubico cryptographic card, that authenticates a user.
The only thing that is going to make login systems truly secure is something like encrypted retinal scanning. If it isn't already, I would think this would be something that should be entirely feasible and cost effective, especially if it sees common use. A chip implant would be another option.