The new Act5Prox can actually handle 100 users if using a combination of card and pin. 50 Card, 50 PIN. It is 50 users if all on Pin & Prox.
The Smart2 range can handle 1000 users and yes, can be networked giving an easily installed and practical solution.
The benefits of the ACT product using standard tokens over the 'shadow' card option can give considerable cost savings, in essence, half the price and simpler ordering process for additional cards.