Good solution for protecting image files in folder

[eluser]esset[/eluser]
[quote author="laytone" date="1266285181"]create a file in /images called .htaccess
add the line:

Code:

Options -Indexes

[/quote]

I tried this but it didn't work, I can still access images in /images/ straight away.

Can my .htaccess in site-root conflict?

This is my .htaccess in root:

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]

Thanks