In my case, I actually did think of this idea! Just never had the hardware knowledge to even know where to get started (and I was worried about the trouble it'

In my case, I actually did think of this idea! Just never had the hardware knowledge to even know where to get started (and I was worried about the trouble it'd cause as card skimmers used it to easily clone cards - hopefully we'll learn more about how coin solves that problem). I'm mostly glad they're trying to make this a reality, because I'd really like to get rid of all these membership/point cards that stuff up my wallet.