Let me get this straight. So the director of one of the government agencies that frequently and illegally spy on Americans is very upset about the capability of new phones to block their spying? (Oh noes, what about the terrorists and child molesters? What about THE CHILDREN?) So the Powers That Be batter and bludgeon our civil rights, and then they get very, very upset when we take legal measures to protect them. Seems to me the responsibility lies with the alphabet agencies who illegally spied in the first place!

WASHINGTON — In his first major policy speech as director of the F.B.I., James B. Comey on Thursday plans to wade deeper into the debate between law enforcement agencies and technology companies about new programs intended to protect personal information on communication devices.

Mr. Comey will say that encryption technologies used on these devices, like the new iPhone, have become so sophisticated that crimes will go unsolved because law enforcement officers will not be able to get information from them, according to a senior F.B.I. official who provided a preview of the speech.

The speech was prompted, in part, by the new encryption technology on the iPhone 6, which was released last month. The phone encrypts emails, photos and contacts, thwarting intelligence and law enforcement agencies, like the National Security Agency and F.B.I., from gaining access to it, even if they have court approval.

The F.B.I. has long had concerns about devices “going dark” — when technology becomes so sophisticated that the authorities cannot gain access. But now, Mr. Comey said he believes that the new encryption technology has evolved to the point that it will adversely affect crime solving.

He will say in the speech that these new programs will most severely affect state and local law enforcement agencies, because they are the ones who most often investigate crimes like kidnappings and robberies in which getting information from electronic devices in a timely manner is essential to solving the crime.

They also do not have the resources that are available to the F.B.I. and other federal intelligence and law enforcement authorities in order to get around the programs.