> I have a 128 MB USB flash drive from back in the day that includes a write
> protect switch. There are few products today that offer that feature.
Side note: AFAIK this "write protect switch" doesn't prevent writing.
It just tells your card reader that you'd like to avoid writing to it.
Whether it ends up doing what you want depends on the hardware exposing
that info to the driver and the driver paying attention to it.
Stefan