Well you can get it only in some kind of machines, and you need to pay it cash. Also you need to use cash to charge it, and you can charge it minimum by 1000 or 500 yen at a time depending on the station, not less.

The digital version only works on iPhones, since Android phones sold outside Japan doesn't have the Felica chip, or if they have it (e.g. Google Pixel) is disabled in EU/US firmware because the manufacturer doesn't want to pay a fee for every phone to Sony for something 99.999% of people that will never travel to Japan would use.