Toshiba has developed a new technology on their self encrypting hard drives that wipe and destroy all data when you remove or switch the device off. It sounds crazy, but it does make sense.
Instead of over-writing the data,which takes hours or using a physical method that requires time and effort the new drives will automatically invalidate the data in just a few seconds by erasing its HDD security key when the power is completely off. This means that any confidential documents stored in the hard drive, like an office printer will be safe in case someone extracts the HD or the device is stolen and disconnected from the power outlet.
