This technology allows to store data in blockchain without opening sender and receiver.
This is the most reliable way to store small but very important data.
If you are storing the private keys in a safe place then no one ever except you will not get access to your data.
Ordinary people will hardly use this functionality massively.
This is already tested on ZCash cryptocurrency.
The most transaction count are ordinary transfers with t1 to t1 address.
This is completely public transactions without data.
The transactions from z-addresses to z-addresses (private) is common very weakly, but they allow you to fully experience the anonymity of this cryptocurrency.
Thus, there is only the corporate sector and crypto anarchists where this type of transaction can be demanded. We can come up with a huge number of applying of this technology. That's we want to show