Are Gift Certificates still a good option for Marketing?

What are Gift Certificates?

They are usually made of paper or thick cardboard type material that contains specific information like the amount/item/services that it can be exchanged for, terms and conditions, serial number, and expiration date of the GC.

It is usually given by customers to their relatives, employees, or colleagues so they can use it either to purchase or experience something.

In the world of Digitalization and Eco Friendly efforts to stop the destruction of our Planet? Is printing on paper still a good way to do marketing?