Photo album and shopping cart

galaxysea

I am new to FUEL CMS, I find it's a great CMS really.
I want to make a CMS photo album and shopping cart, I can't find a suitable add-on/way at this moment. So, I will make one use codeIgniter. I have two questions:
1. How can I use the login function of FUEL CMS to login my customised MVC page? That's after I login FUEL, I can login my gallery page and shopping cart at them same time.
2. Can I change the core of codeIgniter to version 2.1 without problem?

Thanks a lot.

admin

1. The login functionality for FUEL is specific to the FUEL admin. If you need to create a user management system outside of that you can use something like tank_auth:
http://www.getfuelcms.com/forums/discussion/comment/2120/#Comment_2120

That said, you can create modules with specific permissions within the FUEL admin and assign users to those permissions. The tutorial on the following page talks about this:
http://www.getfuelcms.com/user_guide/modules/tutorial#permissions

2. You can but to be honest, I don't remember what sort of issues you may need to fix if any. Any alterations to the Core Code were done using our own libraries outside of the application/codeigniter folder. 2.1 will be in the next version and is what we are currently working with.