Why isn't the deposit savings account with An Post available online?

Why is it only an old-fashioned book? I'm not sure I trust a log book to keep record of my balance. However, I just quit online gambling and don't trust myself with access to digital funds, so the deposit account where I actually have to go to the post office and withdraw money (a weeks noticed needed) seems to be the better option.

I only have 3000 euro left, so I don't care about interest