Quiz on Barcode Readers and QR Codes

What type of information do barcode readers read?

• Text

• Bar code

• Images

• Numbers

Where are barcode readers commonly built into?

• Mobile phones

• Supermarkets

• Computers

• Cars

What is the main advantage of barcode systems over manual data entry?

• No data redundancy

• Automatic stock control

• More mistakes

• Slower data entry

What is a QR code made up of?

• Filled-in squares

• Filled-in circles

• Filled-in stars

• Filled-in triangles

How much data can a QR code presently hold?

• 30 characters

• 4296 characters

• 100 characters

• 500 characters

What is the purpose of the three large squares at the corners of a QR code?

• Alignment

• Decoration

• Encryption

• Error-checking

How are QR codes read using smartphones or tablets?

• By pointing the camera

• By using a keyboard

• By typing the code

• By scanning with a laser scanner

What is a common use of QR codes in advertising?

• Storing boarding passes

• Delivering products

• Containing business addresses

• Authenticating Wi-Fi networks

What is an advantage of QR codes over traditional barcodes?

• Require expensive scanners

• Difficult to read

• Can hold more information

• Cannot be encrypted

What is a potential disadvantage of QR codes?

• Cannot be used for Wi-Fi authentication

• Can be used for attagging

• Only one format available

• Cannot transmit malicious codes