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Google and Apple underline the largest market for smartphones and computers, they can cooperate secretly to leave hidden doors that enable governments to access data.
This may not be announced publicly but it is the easiest way.
I think the Chinese government is doing this and some governments might do that if things get out of control.
Where "technology" is actually Telegram and Tor and maybe WhatsApp, it turns out that criminals don't use as much security as you see in movies. Even if all hardware makers were forced to make hardware backdoors,
Many *older* hardware devices have a lot of back doors when they are physically accessed. So if they can physically access these devices, decoding will be easier for them.
As for forcing back doors, this will facilitate the task, imagine instead of decrypting a private key, install malicious programs in the device and it will reach the currencies easily.
True privacy is what we should be aiming for and not those compromised one.
When crises happen, I think many governments will start defining a word of privacy.