but packing a little bit of a bigger punch in terms of snow accumulation, 3-6 inches in the jackpot zones across central massachusetts. jim. >> axelrod: that is not a very spring-like welcome for april. thank you, pamela. this past week, the f.b.i., along with some outside help, unlocked an iphone used by one of the san bernardino terrorists. today we learned the f.b.i. has told local police departments it will help them unlock cell phones in cases where they could provide evidence. as john blackstone shows us, cracking the code is easier said than done. >> reporter: when the f.b.i. heunched its search for a way to anlock the san bernardino derrorists' iphones, the technicians at a california company called drivesavers were among those who took up the challenge. they have plenty of experience rescuing broken iphones. how many iphones a month do you get that you have to try to get kformation from? y, you know, we see, actually, anywhere from 100 to 300 iphones a month right now. >> reporter: michael cobb is drivesavers' director of engineering.