For example, here are some white space #passwords with 80-bits security. There are 16 white space characters to choose from of varying widths, which means each of these below are 20 characters long, wrapped in quotes:

- "                  "
- "      　             "
- "                   "
- " 　               "
- "          　      　  "

So, not only are there passwords you can't remember, now there are passwords you can't read!