Absolutely! Electronic larynx, which I believe you are speaking about, allows for audible communication between friends and family members. But it would also allow for those in need of such devices to do business with their local merchants more easily. I'm a bit rusty on them, but I believe you can also use them on telephone calls as well. ( I used to work for the local telephone company and we sold/rented them. I worked there a lifetime ago, so I've forgotten the details.