A physical address for the company, or sending an email to one of the contact addresses can further verify the reliability of the company.[8] Even on trusted sites, it is important to be diligent that one has not navigated away from that site. Other safe practices include being cautious of account number distribution, keeping credit cards separate from a wallet or purse, keeping constant sight of credit cards, and drawing lines on blank spaces above the total on receipts. On accounts in which one has saved card information, it is important to have a strong password with a mix of numbers and symbols.