I played in a regular home game for many years with a bunch of old fart retirees (lol). These guys played in home games for most of their lives and rarely in a casino environment. They were there for (in order of importance): 1) the money; 2) the booze & snacks; and 3) the social aspects. Since the money was most important, anything perceived as "holding up the game" would always be an issue. Adding any kind of technology such as this would just be confusing, distracting, and annoying to these types of players.
They'd also probably complain about paying to buy it. How much will it cost, BTW?
Also, I don't have any idea (and not sure that anyone else can say definitively) whether there are more people in this age group (60+ yr olds) playing in home games than young or middle aged people. I imagine they make up a significant percentage though. I think younger players would tend to be more receptive to something like this invention, so to have a chance of being successful in the home game market, you would need to at least have an idea if there are enough younger players to make it profitable.
IMO, in a home game it's not usually that hard to figure out if you have the button next when the person on your right just dealt, but you can always ask if you can't remember. Also, what acted as kind of a "button" for us was having two different color decks at the table to speed up play. The player to the dealer's left would shuffle their deck, and have it ready to cut and deal as soon as the previous hand was cleared. This also made it easy to see which player the picked up cards from the previous hand should go to.
If someone called the clock on a player (hardly ever happened because usually one or more players would just start beotching at them), we used an old fashioned egg timer that was already set about 2/3 of the way through, to give them approximately one minute to tank. Seriously low tech poker, lol
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