: Unlike previous magnetic or optical media, flash memory has no moving parts, making it resistant to mechanical shock and environmental factors.
: Modern memory keys are often used to carry steganographic programs that can hide information within other files, leaving no trace on a host computer's hard drive. usb memory key
Before the USB memory key became standard, data transfer relied on fragile floppy disks with minimal capacity or optical media like CDs that were prone to scratching and required specialized burning hardware. The introduction of the "thumb drive" replaced these with a rugged, rewriteable format that leveraged the universal plug-and-play capability of the USB port. : Unlike previous magnetic or optical media, flash