Copy protection is provided by this application for Excel sheets/workbooks.
XLS Padlock is software for Microsoft Excel to copy-protect Excel workbooks. This tool works as an add-in for the Microsoft Excel. It turns the Excel worksheets into secured files. Even when these kinds of data have to be distributed widely, you could feel safe that only authorized people will be able to access the data. The possible other protections are dongle based and hardware based. With the dongle based protection, you need to have an authorized dongle to run the sheet on a computer. The locking could be hardware locked; where the license key looks at the CPU and or HDD id to arrive at an authorization code. This way, the workbook can be working only on a particular machine. This tool allows you to lock specific formula to protect your data.
You can set it so that the use is time limited. The access expires after a given number of runs, given number of days or on a specific date. The program is standalone, and no other program (you need Excel, of course) is required for it to complete its job. It is compatible with Excel 2000, 2002, 2003, 2007, 2010 and Excel 2013; 32-bit or 64-bit versions. This has a clear and easy to use interface. It is intuitive enough that most users should get familiar with it quite easily. Getting productive with it should not take much time. Most users savvy enough to use Excel should be able to master the tool very quickly. This is a very good product. If you are looking for a similar solution, you should try it in your exact workflow.