A mouse that has a built-in privacy button so you can quickly switch windows from what you were looking at when you boss strolls over to your desk has been launched in the US.

The USB Smart Privacy Mouse will cost $20 and allow you, if the drivers have been installed, to press a button on the side to conceal any and all programs in windows and jump to a dedicated window you've pre-determined like a boring spreadsheet.

Ideal for readers of Pocket-lint that should perhaps be doing something else. The mouse can work as normal without the software installed.

A word of advice to would-be owners, just remember not to show your boss how cool your new gadget is.