RFID system

[adhha_90]

Hi there...
I have a few questions about RFID system.

Q1. I'm a little bit curious about RFID. Can I use two RFID in a single system? How does it work?

Q2. Usually, the supermarket used what type of sensor? Did it RFID or just a simple sensor?

Q3. How to make a connection between the data scanned from RFID with the server @ database?

Q4. Can a single RFID scan two code at the same time?

[shahrul]

Hi there...
Q1. I'm a little bit curious about RFID. Can I use two RFID in a single system? How does it work?

Q2. Usually, the supermarket used what type of sensor? Did it RFID or just a simple sensor?

Q3. How to make a connection between the data scanned from RFID with the server @ database?

Q4. Can a single RFID scan two code at the same time?

A1. What two? You just use 1 RFID Reader and can use many RFID tag.

A2. Supermarket, scan product use Bar Code Reader. I think, that is not RFID. RFID can only scan in short distance.

A3. Use microcontroller, receive RFID data then process it.

A4. RFID Reader just scan 1 RFID tag at one time.

You can see example here, there is only read one-by-one RFID Tag.