Q. Can I register more than one MFA device? Yes. First Coast recommends that you register more than one multifactor authentication (MFA) device. To register a second or third device, follow the steps you took in registering your initial MFA device. When logging into SPOT, you will select only one of these devices to receive your MFA passcode.
The microSD removable miniaturized Secure Digital flash memory cards were originally named T-Flash or TF, abbreviations of TransFlash. TransFlash and microSD cards are functionally identical allowing either to operate in devices made for the other.
They were called TF cards. They were called TF cards earlier and were later renamed as micro SD cards. They measure 11mmx15mmx1mm and provide a maximum storage of 32GB. TF stands for 'TransFlash' and microSD for 'micro Secure Digital'.