There is a belief among cryptocurrency investors that the best security is the investor himself. This is true, but it needs support from smart devices and software. It is especially important to create a backup copy of the seed words that are used to gain access to the "account". Writing down the key on the mobile devices or on a piece of paper have some drawbacks.
Currently, the most effective solution is to purchase plates made of steel. Crypto wallets can then be placed in a safe space and accessed when necessary. Such a solution is offered by Coinplate, a manufacturer of steel plates for storing seed words.
messages.published : 2023-09-17