They get one text. They tap yes and pick a stock. That is the whole setup on their end. Three relatives maximum, and each one has to be a real person with a real phone.
Add a relative
Must be a real mobile or landline. Virtual and VoIP numbers are declined.
Pick the one they already talk about. If you are not sure, leave it blank and let them choose.
What happens next
now
They get the textFrom a fixed Grandma Coin number. Tell them to expect it, and to save the number.
then
They tap yes and pick a stockOne page, large type, three taps. A wallet is created for them in the background.
then
You see them in the appTheir name, their stock, and a Start call button.