Windows10

Enabling the Windows 10 lock screen image information

Click on Start > Run and type control userpasswords2 to open the user management dialog. Click on the Advanced tab and untick the checkbox at the bottom for Require users to press Ctrl-Alt-Delete

Comparison of files or folders

Install WinMerge from winmerge.org - it includes a shell extension to allow easy comparison of files or folders.

View image EXIF data

Picture Information Extractor (PIE) - free download

• picmeta.com

Checksum files

Works in Windows 7 and 8 too.

certutil -HashFile filename.zip MD5
certutil -HashFile filename.zip SHA1