The Heaviest Credit Card Money Can Buy

Physical credit cards should be a thing of the past. Over the past few years, touchless services such as Apple Pay have driven a boom in the digital-payment industry: Digital wallets now account for about half of global online purchases and one-third of point-of-sale payments. You would think that credit-card companies might abandon investing in cards that weigh down your wallet—but you’d be wrong. Take, for example, the Platinum Card from Robinhood, introduced in March. Coated in 99.9 percent…