Pie menus work well with trackpads and trackpoints (keyboard clitoris), as well as analog and digital 4- or 8-directional joysticks, and even numeric keypads an

Pie menus work well with trackpads and trackpoints (keyboard clitoris), as well as analog and digital 4- or 8-directional joysticks, and even numeric keypads and arrow keys. If you arrange your menus into 4- and 8-item pie menus, they are uniformly navigable and memorable for many types of input devices including keyboards. Four and eight items are ideal for muscle memory, and also cognitive memory too. So using pie menu layouts that map directly to keyboards and digital joysticks works really well. The ActiveX pie menus I implemented for Internet Explorer a couple decades ago supported full keyboard navigation: https://www.youtube.com/watch?v=nnC8x9x3Xag https://www.youtube.com/watch?v=nnC8x9x3Xag