A cold storage method is the safest way to keep your cryptocurrency secure, however it's time consuming and requires more steps than using an online wallet or hardware wallet. This process involves storing a small amount of bitcoin offline on a piece of paper with all private keys written down, then shredding this information after you're done storing them.  You can also use other offline tools like Trezor One X or Ledger Nano S . These devices allow you to store your coins offline without the need for any personal information at all.