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RFID Technology Basics
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RFID Technology Basics
RFID Technology Basics
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1
Question
What should a user look for in the Serial Monitor after scanning an RFID tag?
Answer
CARD UID.
2
Question
Auto-ID center founded at MIT - 1999
Answer
standardization effort taken over by EPC global electronic product code
3
Question
What are the components of an RFID system?
Answer
1. RFID Tags 2. RFID Reader. 3. RFID Station 4. RFID antenna
4
Question
In the RFID module wiring diagram, what Arduino pin connects to 'MISO'?
Answer
Pin 12 (Master In Slave Out).
5
Question
read range approximately 30 ft.
Answer
passive tag
6
Question
What should be done if the MFRC522 library is not included?
Answer
Include the MFRC522 library by adding 'include MFRC522.h' at the beginning of the code.
7
Question
What cautionary message is printed in the setup function of the RFID reader code?
Answer
'Put your card to the reader'.
8
Question
true or false: ID card --> Match with DB --> "you are valid"
Answer
true
9
Question
where does 'VCC' connect in the RFID module pin configuration?
Answer
Voltage 3.3v. of the arduino
10
Question
read range of about 100 ft
Answer
active tag
11
Question
What does the block of code checking if 'content.substring(1)' matches 'XX XX XX XX' signify?
Answer
It is used to check if the UID of the scanned tag matches the authorized card UID for access.
12
Question
What does the command 'myServo.attach(3);' accomplish in the Arduino code?
Answer
It attaches the servo motor to pin 3 on the Arduino.
13
Question
a micro-chip in a label used to transmit data when the label is exposed to radio waves
Answer
RFID
14
Question
When and who was the first use of RFID device
Answer
2nd world war, Brittan used RFID-like technology to identify friend or foe
15
Question
What does the command 'delay(3000);' do in the Arduino sketch?
Answer
It pauses the program for 3000 milliseconds (or 3 seconds) before continuing.
16
Question
True or false: RFID technology is not referred to as an invasive technology
Answer
false
17
Question
What is the significance of the line 'Serial.println(
Answer
It is intended to provide feedback through the Serial Monitor for verification of code execution or for debugging purposes.
18
Question
true or false: RFID can store up to 2kb data
Answer
true
19
Question
transmit radio signal
Answer
antenna
20
Question
contain a batter that runs the microchip's circuitry
Answer
active tags
21
Question
True or false: RFID cannot easily be replicated
Answer
true
22
Question
True or false: it is difficult for an RFID reader to read the information in case of RFID tags installed in liquids and metal products.
Answer
true
23
Question
serves the same purpose as a bar code or a magnetic strip on the back of a credit card or ATM card; it provides a unique identifier for that object.
Answer
RFID RADIO-FREQUENCY IDENTIFICATION DEVICE
24
Question
What happens when the RFID reader detects a new card?
Answer
It proceeds to select one of the cards and reads its UID.
25
Question
tags which word at frequency bands of 13.56 MHz or lower are still the most widely used
Answer
true or false
26
Question
ends stronger signal to the reader due to battery
Answer
active tag
27
Question
power from a reader
Answer
passive tag
28
Question
operating principle of RFID systems
Answer
inductive coupling
29
Question
readers send electromagnetic waves that produce current in the tag's antenna which the powers the microchip's circuits
Answer
passive tag
30
Question
What does 'noTone(BUZZER);' do in the context of this project?
Answer
It stops any tone that is currently being played on the buzzer.