Nails provide one of the best clues to help determine the age of historic buildings, especially those constructed during the nineteenth century, when nail-making technology advanced rapidly. Until the last decade of the 1700s and the early 1800s, hand-wrought nails typically fastened the sheathing and roof boards on building frames.
BitLocker Overview:BitLocker is Microsoftâs full disk encryption solution, which protects all of your data from theft, hacking or loss. BitLocker does this by encrypting the entire drive that hosts your Windows operating system and all your data. BitLocker is available for all devices, including... more Â».
Users of Windows 7 may also take advantage of BitLocker To Go, a free encryption software to password protect USB sticks. slide 3 of 5. TrueCrypt A freeware password protection for external drives that has not been decrypted by unauthorized user, even by FBI is called TrueCrypt.