Hardware wallet - how safe longterm?

cmcraeslo
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Hardware wallet - how safe longterm?

I've been reading about the "not your keys, not your coins" thing for a while and i've been thinking of getting the hardware wallets and getting my crypto off the exchanges. But i'm worried in long term - how can I know that the usb key will be working after 10 years, will I loose it etc. Thinking about this, it makes me think, coins are safer on the exchange. Realisticaly - what happens in 20 years, who guarantees that these wallets will be compatible to "those" computers?