Card Readers and Credentials need to be compatible with the Keyscan Panels. Only specific formats are supported. Otherwise all existing credentials will need to be scanned into the system with an enrolment reader.
Caveats:
Very solid platform - Aurora platform is feature rich; notably is the multi credential and user centered management.
Integration: Various integration modules are available that facilitate integration with burglar and surveillance systems. Burglar Alarm integration is simple and straight forward. I have no first hand experience with the surveillance system integration know it is available.
Food for thought:
Overall the Keyscan Aurora platform is an excellent product. Performance is solid and reliable. Technical support is excellent and 99 percent of the time resolve any issue immediately. The system is best as a stand alone unmonitored platform. Manage users, run reports, adjust schedules etc. The interface when used at a guard position or control center leaves much to be desired. Things become clustered, and overall non intuitive.
I highly recommend having a partner provide a demo of the platform. Additionally FYI there are many youtube videos covering installation, configuration and operation that provide an idea of what to expect from the platform.