New York Times: Scientists at the University of California at Santa Barbara have devised a motion detector capable of detecting displacement on an atomic scale.

(The article unfortunately doesn’t give a great amount more detail than that.)

Scott Rafer writes:

The fully loaded cost of offering free Wi-Fi access is less than $6/day. Operating a billable hotspot costs over $30/day.... Here's the irony in Wi-Fi public access pricing: retailers can be profitable by offering free Wi-Fi as a customer acquisition tool. But when they charge for Wi-Fi access, these retailers, and the WISPs serving them, almost certainly lose money. According to a market study coming out this summer, retailers are quickly learning this lesson: up to 30% of US location owners who plan to deploy commercial hotspots in 2004 intend those hotspots to be free or free-with-purchase.

[via WiFi Networking News and Boing Boing Blog]