Which device reads RFID or NFC tags at close range and is commonly used at entry points?

Which device reads RFID or NFC tags at close range and is commonly used at entry points?

• A. Proximity reader
• B. Barcode scanner
• C. Magnetic stripe reader
• D. CCTV camera

Answer: (A)

Proximity readers are designed to read RFID or NFC credentials at very short ranges and are commonly used at entry points for access control. When a card, badge, or smartphone with an RFID/NFC tag is held near the reader, the device powers the tag with radio waves, reads its unique identifier, and passes it to the access controller to determine whether to grant entry. This short-range, contactless communication is what makes proximity readers ideal for doors and gates. Barcodes require line-of-sight scanning and read printed labels, not RF communication. Magnetic stripe readers swipe a card to read data stored magnetically, not RF tags. CCTV cameras capture video and do not read RFID/NFC credentials for access control.

Proximity readers are designed to read RFID or NFC credentials at very short ranges and are commonly used at entry points for access control. When a card, badge, or smartphone with an RFID/NFC tag is held near the reader, the device powers the tag with radio waves, reads its unique identifier, and passes it to the access controller to determine whether to grant entry. This short-range, contactless communication is what makes proximity readers ideal for doors and gates.

Barcodes require line-of-sight scanning and read printed labels, not RF communication. Magnetic stripe readers swipe a card to read data stored magnetically, not RF tags. CCTV cameras capture video and do not read RFID/NFC credentials for access control.