Anyone implemented online payment system for libraries? If so, could you share the system you ended up selecting and experience of implementing it? I am currently looking at Cybersource and Authorize.net but it would be nice to have some others to consider as well.

(FYI, our library fines are processed by the library staff, not by the university bursar.  And the university does not allow the use of PayPal.)

Thanks,
Bohyun