It's a form of acoustical spying that should raise red flags among computer security and privacy experts. If we were able to figure this out, it's likely that people with less honorable intentions can — or have — as well.

It's a form of acoustical spying that should raise red flags among computer security and privacy experts.

Most experts agree that calculating wind chill gives a number too low. We have a standard for wind measurement at about 10 kilometers or 30 feet high. It's good for aviation use but it overestimates the wind speed. The wind down below is lighter (slower) than the wind at that height.

I think we truly have a panel of real national experts on terrorism and the security of our borders.

Background noise definitely made it harder to recover accurate text, but the differences became smaller after several rounds of feedback. Given enough tries, the computer algorithm will eventually come up with a pretty good estimate of the text that was typed.

There are different forms of authentication that could be used, including smart cards, one-time password tokens or biometrics. That helps with passwords, but it doesn't help protect text documents we would want to keep classified. I'm not sure what the solution is, but it's important that we're aware of this vulnerability.