That doesn’t work in cases like the San Bernardino shooter where the owner of the phone is dead.
I’m not sure what the best trade off is, once you put a back door in it is open to abuse by the government or hackers figuring it out, but there are cases where access is needed, and many of the documents that investigators would have been able to find on paper in the past to help find connections when a suspect is dead have moved to our phones so just old fashioned police work won’t always cut it.
Having a backdoor for the authorities to obtain moral and legal issues, and as you mentioned if the authorities can access it so can hackers or other nation’s governments. In this situation we jeopardize all parties, may it be for good or evil.
The government and authorities do are not immune from hackers either, if they are unable to keep they own network and information secure, we are not going to hand over backdoor access to these immoral and incompetent organizations. Yes, many companies have been hacked, however these are not publicly funded and are not looking to support its citizens.
With the corruption occurring on every level of government in many countries, the less control they have over our data and privacy the better. It seems the authorities are seeking for a easy solution rather than investigate with skill, maybe they have been watching too many prime time tv shows. Where does reality not correspond with fiction and these authorities believe they are the lead actor in some twisted fantasy.
Imagine this for a second, you give up some of your rights and freedoms to the government and authorities to catch a few evil people, the devices they use may render little to no usable information. However in the process the majority will be at risk not only from other evil agencies, but also from the elected government to be used for nefarious purposes to possibly blackmail or extort compliance.
If you want to see a possible scenario gone horrible wrong, watch the movie, “Enemy of the State” with Will Smith, Gene Hackman and Jon Voit as the named stars. I am not going to ruin the movies plot, however its a very believable scenario.
What next you say I have nothing to hide as I have done nothing wrong, remember this is up to whomever is left to interpret what you have on your phone. You may have pictures of your relatives children or work as a junior league coach with children’s picture, whomever is looking at them may suspect you are some pedophile, even though it might be completely innocent. I could use other examples, however my point is made. We do not need over policing, it only makes the public uneasy and fearful for no reason what so ever, as fear is used to control the masses/innocent to comply with nonsensical requests or be labeled a non compliant suspect.