[Red Badger]

I don’t know why they haven’t used this ‘entangling’ for a super secure communications system yet..................

[NorthMountain]

(1) Who says “they” haven’t? 😎

(2) Fundamental discoveries can be very difficult to develop into practical applications.

[bosco24]

-I don’t know why they haven’t used this ‘entangling’ for a super secure communications system yet..................-

I don’t think that would work as you can’t transmit information via entangled particles.

[cbvanb]

According to the book Atomic Adventures by James Mahaffey, that project has been underway for several years now. The application is more focused on instant communications from very long distances across the universe.

[NaturalScience]

"I don’t know why they haven’t used this ‘entangling’ for a super secure communications system yet.................."

They have, it's just not built into existing devices yet (routers, firewalls, etc.). Right now it requires external servers for key exchange. Look up "QKD" (Quantum Key Distribution) for more info.