Cell phone jitterbug

The district permits cell phones but forbids students to use them during class, a rule Verrico said often is not enforced. Brian Josef, a spokesman for a national advocacy group for the wireless industry, said cell-phone jammers risk interfering ... In March, a school district near Spokane, Wash., conducted a three-day test of a cell-phone jamming device that it purchased on the Internet for about $100. Officials there also said they didn't know such devices are illegal . ...