I have purchased Tangem BTC, ETC and XLM cards and they are great for cold (offline) storage. I keep them in a safe. If anything happens to me, my wife and heirs can access it without lost passphrases or secret seed codes. Much easier to use than the Nano S. The only downside is that the card holds your private key (so if you're an idiot and lose your card, you'll lose your cryptocurrency), just like cash or a gift card. Works with an easy to use application. This is the best storage option for beginners and minimalists.
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