... prevent the player and CF card from being stolen in public place.5.Password can be set protect the contents.6 ... -in flash memory:(optional) USB:high speed USB 2.0(Host)3.Others:Power supply:AC 110V-240V,50/60HZWorking temperature ... ,etc3.Non-profit Organizations:Telecommunications,post offices,hospital,schools,etc4.Public Places:Subway,airports,stations,gas stations,toll stations,bookstores,parks ...