SAN FRANCISCO (AP) — The top prosecutors in San Francisco and New York say they are reserving judgment of Apple's new iOS7 security feature designed to make it harder to reactivate a stolen iPhone.

San Francisco District Attorney George Gascon and New York Attorney General Eric Schneiderman said Monday they aren't judging Apple Inc.'s new activation lock feature until they can fully understand how it works.

Apple mentioned the new feature during the Worldwide Developers Conference in San Francisco on Monday.

While Apple didn't provide much detail on the new feature, company officials say it would deter iPhone theft.

Gascon and Schneiderman have been asking the leading wireless makers to create a "kill switch" to curb the rise in cellphone thefts and robberies nationwide. They are co-hosting a "Smartphone Summit" in New York City on Thursday.