If you're looking for the ultimate in electronic access control, Progeny's P3 online system may be your perfect solution.
Progeny's P3 access control system can be used for single or multiple sites as IP connectivity gives easy reach to sites that can be anywhere in the world. The P3 online system is compatible with Crystal readers (a universal RFID reader) and touch switches offering various options.
For more information, take a look at Progeny's blog post:
Blog Post: Progeny offers an extremely reliable and versatile access control solution
View P3 Access Control System with Crystal Readers Product Entry