RC,
The "Drive-By" article was probably discussing wireless internet connections and such.
If you're just talking about Wireless Keyboards, their range is limited but there is a slight risk if someone is extremely close. Click on the link and read a discussion about the issue:
Wireless Keyboard/Mouse - Security Threat?
Hope this helps.
Grif
I recently saw a news report that showed just how easy it is for hackers to drive by someone's house that uses wireless connections and steal personnal information stored on their computer for Identy Theft. Although I do not have wireless connections for the computers my husband wants to use wireless keyboards. My question is, can this also lead to a security problem? Any info would be greatly appreciated.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic