If you want to really have a secure wallet adress you register it with a e-mail adress or maybe a phone number . Or you simply write on a piece of paper that details for login and wallet number
But then you lose control over it, becasue if you change your email and phone in the meantime (or somebody hacks it) you can also lose access to it.
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Right, but i mean to have a specific e-mail adress and phone that you are sure that you will never lose. Anyway if you have a little amount of btc in your wallet it doesnt matter this.