'Bluejacking' trend hits cell-phone users by surprise

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STOCKHOLM -- The group of lanky tourists strolling through the Swedish capital's old town never knew what hit them.

As they admired handicrafts in a storefront window, one of their cell phones chirped with an anonymous note: "Try the blue sweaters. They keep you warm in the winter."

The tourist was "bluejacked" -- surreptitiously surprised with a text message sent using a short-range wireless technology called Bluetooth.

As more people get Bluetooth-enabled cell phones -- both sender and recipient need them for this to work -- there is bound to be more mischievous messaging of the unsuspecting.

It's a growing fad, this fun with wireless.

Already, Web sites are offering tips on bluejacking and collections of startled reactions are popping up on the Internet.

One site, www.bluejackq.com, was set up by a British teenager.

"I bluejacked three or four people," said 13-year-old Ellie of Surrey, who runs the site and makes bluejacking a daily affair. "But one of them was particularly memorable. He was with his wife, and I bluejacked him in a coffee shop. The look on his face!"

Using Bluetooth, which has a range of about 30 feet, she sent him a note asking how his coffee was and noting that she liked his wife's glasses.