"Granting that it didn’t...In the simplest terms, your architecture is protected by a five-part lock. It’s not like a safe, but let us pretend that it is. To get access to the contents, one must have a physical key—in this case that is a terminal hardwired to a closed network. There is a list of registered and authorised persons who may act on that network, and each of them has a complex and unique passphrase. One, two, three. So far, not unassailable, though also not comfortable. Then you have your biological identity—not only your DNA but the mix of microbial organisms living on and in your body." He smiles. "I beat that one, you know."