Bracode
A barcode is an optical machine-readable representation of data.
Every barcode begins with a special start character and ends with a special stop character. ( Some may have checksum character).
The advantages of 2D code over barcode
- Encode a lot of information in a small space.
- Barcode: 20 to 25 characters.
- 2D code: 100 to 2000 characters.
QR code
Quick response code.
- Fast readability.
- Large storage capacity.
- Detected as a 2-dimensional digital image.
- The processor locates the 3 distinctive squares at the corners of the image, and normalizes image size, orientation and angle of viewing, with the aid of a smaller square near the fourth corner.
IC Card
integrated circuit card.
- It uses a powerful, large capacity embedded IC chip to store a large amount of information.
- It can preform mathematical calculations.
- It’s difficult to counterfeit and decrypt, making them a much more secure choice.
Types of IC Cards
- whether contain microprocessor: storage cards, CPU cards.
- whether need to contact with the reader: Contact smart cards, contactless smart cards.
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