Security Fears of Wi-Fi in London Underground

The London Underground is getting Wi-Fi. Of course there are security fears:

But Will Geddes, founder of ICP Group which specialises in reducing terror or technology-related threats, said the plan was problematic. He said: "There are lots of implications in terms of terrorism and security.
"This will enable people to use their laptop on the Tube as if it was a cell phone."
Mr Geddes said there had been numerous examples of bomb attacks detonated remotely by mobile phone in Afghanistan and Iraq.
He warned a wi-fi system would enable a terror cell to communicate underground.
And he said "Trojan" or eavesdropping software could be used to penetrate users' laptops and garner information such as bank details.
Mr Geddes added: "Eavesdropping software can be found and downloaded within minutes."

This is just silly. We could have a similar conversation regarding any piece of our infrastructure. Yes, the bad guys could use it, just as they use telephones and automobiles and all-night restaurants. If we didn't deploy technologies because of this fear, we'd still be living in the Middle Ages.
@'Scneider on Security'