 Anonymous asks, my question is about hardware wallets. I find it very hard to believe that everyday people would use a hardware device to store the substantial wealth. Can an electronic device really last 10 or 20 years? How many others have similar questions to this? Does everybody understand what this question is asking? Do you have concerns about an electronic device lasting 10 to 20 years to store your substantial wealth? Okay, who wants to jump in the chat and offer a counterpoint to that? Why are we not worried about the longevity of the device? This is a question for the class. Thicus jumped in first, but the wallet is not really the device. It's the seed words, isn't it? Bingo. Seed phrases last forever. Bingo, because the money is not in your wallet. Bingo, ding, ding, ding, ding, ding, because you can buy a new device. The device is only a viewer. It's a viewer, it's a signer, and a generator. Great, thank you. It seems that my people have been paying attention. Smart class yesterday. A hardware wallet is not primarily a key storage device, although it is, it acts as a tamper proof and tamper evident key storage device under certain circumstances. And it's a key generating device. And there's another question related to that. And it's most importantly a transaction signing device. It's a secure device for signing transactions, but the funds are not stored in the hardware device. The funds are stored on the blockchain and access through the seed words. The seed words you install on any compatible device or generate on your device, but then you can always transplant them to any compatible device as long as you have a backup of the seed words. What's going to last you 10 to 20 years, hopefully if you do it right, is your seed words. Hi, thanks for watching the video. I'm Andreas Antonopoulos. I'm the author of Mastering Bitcoin, Mastering Ethereum, and the Internet of Money series. If you'd like to support my mission of bringing education about Bitcoin and open blockchains to as many people as possible under open free Creative Commons licenses, please consider subscribing to my channel and supporting me on patreon.com slash A-A-N-T-O-N-O-P. Thank you.