Thank you. That's a good question.
With regard to the costs, I will go in reverse order. They could be kept to a minimum if we played the cards of redundancy, where we have two or three voting mechanisms and make sure that a vote makes it through and is reliable. That way we could use a less costly solution.
In Eastern European countries, they have SIM cards in their cell phones they use for signing transactions and documents, or things like that. They're effectively really cheap, and the cost of implementation is relatively cheap as well.
Technologically, for voting, it's fairly inexpensive to implement and very efficient.