How is anyone going to buy your devices if no one has heard of them? The best chance they have to gain traction is to attract users. You can buy marketing unti

How is anyone going to buy your devices if no one has heard of them? The best chance they have to gain traction is to attract users. You can buy marketing until your budget is gone, but that only goes so far; word of mouth is almost certainly the best chance they have to expand their user base, improving their brand awareness, drawing new buyers.