Synchronous Constantly Changing Encryption Device Idea/ Also: How will Capitalism survive the rise of the Robots?

Synchronous Constantly Changing Encryption Device Idea:

Say that you have two devices, a digital key and a digital lock that do everything in synch with each other.

Within the digital key the password is changed every few seconds while at the same time the password within the lock is changed, identically, every few seconds.

What I mean is that, because they do everything in synch, whenever they change the password they change it to the same password.

No one would ever be able to hack into the digital lock because the password is constantly changing.

Only the key and the lock would know the password during any particular second.

Objection: If they have to do everything in synch then how do they change the code randomly; in order to move in synch with each other they would have to follow some predictable pattern?

Suggestion: Each time the key is put into the lock, both devices agree upon a random starting password, then move in synch from that randomly chosen password, unless you know the starting password you wouldn’t be able to work out what the password had changed to.

How will capitalism survive the rise of the Robots?

Step 1: Robots replace all human workers (all agricultural and industrial workers; everyone in service industries; care industries; office and administration. Only the upper middle classes might survive, at least until robots can be made to do the jobs of doctors and lawyers etcetera)

Step 2: There is mass unemployment

Step 3: Because people can’t earn money they can’t buy goods.

Step 4: Business’s collapse because they have no customers.

Step 5: The only way to care for all the trillions of unemployed people is to adopt socialist style “Big government”, nationalized industries and welfare state.

Step 6: Because of Capitalism we end up living in a Socialist world where nobody works for a living; where robots, working for Nationalized industries, do everything and human beings, collecting welfare checks simply consume state produced goods.