How long does the flash memory in a hardware wallet last without being plugged in? USB drives and flash memory usually fall prey to bitrot. Any numbers that we can reasonably go by?
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I've wondered about this too, in relation to how long a safely stored OpenDime can hold data before it somehow just fizzles out
This!
About 10 years, unless it's poorly made, you get unlucky or you store it near a source of ionizing radiation. Wrapping it in a couple of layers of tinfoil will help somewhat. Lead is much better. Internal batteries and capacitors are a bigger risk. They can leak in just a few years and ruin your day.
Generally, I wouldn't feel comfortable haiving a single point of failure protecting any significant value. Backup your seed phrases and dirivation paths and consider multi-sig.
