Complicated, long passwords with combination of characters, numbers and alphabet are good for your Yahoo account security but this is completely out of fashion. This has been changed in past years; we have moved to touch screen mobile devices and now you don’t need to type your. Complicated, long passwords with combination of characters, numbers and alphabet are good for your Yahoo account security but this is completely out of fashion. This has been changed in past years; we have moved to touch screen mobile devices and now you don’t need to type your Yahoo account password.