You know where you are with Wi-Fi

[vee_ess]

"LOST in a strange city with no GPS? Don't worry. Wi-Fi hotspots can now tell you where you are."

Entire article at New Scientist.

Some other NS articles:
Small wonders, sculpted by laser
"IT COULD be the world's smallest fence: a chain of five crude, squarish links is strung between posts just 40 micrometres apart. This microscopic barrier marks the threshold of a new world of fabrication."

Laser pulses could power quantum logic gate
Nanowire splicing to make ultra-small circuits