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Table 1: Comparison of basic card slot and proximity-based access control systems
Question	Card slot	Proximity	Comments
Is a vandal-resistant reader available?	No	Yes	If the reader is vandalised, door operation and security are lost
Is the reader weatherproof?	No	Yes	In outdoor applications, weatherproofing is essential
Can the reader be hidden behind a wall?	No	Yes	Exposed card-slot readers detract from the architectural beauty of a building. A hidden reader is also more secure
Can the reader be disguised as a sign or plaque?	No	Yes	Another method of “hiding” a reader
Is the card/key easy to use?	No	Yes	Ease of use leads to higher employee acceptance
Is the reader free of moving parts?	No	Yes	Moving parts are inherently less reliable than solid-state devices
Can the card/key be used without removal from wallet or key ring?	No	Yes	Very low card/key loss with proximity
Is the ID device guaranteed?	?	Lifetime	Proximity keys cost less to own
What is the speed of personnel throughput?	Low	High	Employees can simply “show” their key to a proximity reader and walk through without slowing
Is the card/key secure from copying or duplication?	?	Yes	Yes, proximity is top rated for security
Can service and support be obtained locally?	?	Yes	The best manufacturers will offer full service capabilities through factory-trained and supported dealers