What are the two general types of proximity identification devices?
A.
Biometric devices and access control devices
B.
Swipe card devices and passive devices
C.
Preset code devices and wireless devices
D.
User-activated devices and system sensing devices
Explanation:
D: A user-activated system requires the user to do something: swipe the card through the reader and/or enter a code. A system sensing device recognizes the presence of the card and communicates with it without the user needing to carry out any activity.