We strongly encourage you to additionally back up the SEED on a piece of paper and store it in a safe place. The provided string of 15 English words is cryptographically extremely secure and with the current technology unbreakable. Each and every SEED is only linked to one single LTO account. Every digit, character, symbol and space counts - if there is one space too much, a different account opens up. If there is a wrong symbol, a different account opens up. If there is a spelling mistake, a different account opens up.