ZDNET's key takeawaysThe new KeySmart SmartCard (Gen 3) provides dual-network support. Very thin cardThe Gen 3 SmartCard is very thin at just 1.8mm and slides into my minimalist wallet with ease. Given that I have a credit card, driver's license, transit card, and door access card in my wallet, the KeySmart SmartCard is an essential accessory that offers peace of mind on a daily basis. The SmartCard charges up wirelessly, so you can just set it down on your wireless charger to top it off. I like that I can use my Samsung Galaxy Z Fold 7 with reverse wireless charging to power up the card.