How to connect multiple RFID(RC522) to a NodeMCU

[mr_shaladdin]

Hi, So I have a project, that's basically an account system with RFID and store the data in Firebase,
I got the firebase working, and the RFID working, but I don't know how to use multiple RFID, I only need 2 RFID actually. so how do i connect both 2 RFID to the NodeMCU?

[Grumpy_Mike]

@mr_shaladdin

so how do i connect both 2 RFID to the NodeMCU?

Assuming you are using an SPI interface because you omitted that very important detail ;

you connect the both to the same pins except for the select, sometimes called the CE or chip enable pin. You have that connected to another pin.
Then before you do the serial transfer you set the old CE pin low or the new CE low depending on which one you want to read.