No-click browsing of large hierarchical data

We introduce a novel simple interaction technique for finding and browsing data in a large hierarchical database using only two keys.Finding data from a huge hierarchical database takes time because users should traverse the tree using a mouse or a keyboard, and click a "select" button to check the content. If the data was not appropriate, they should go to the next entry and perform the selection task again.In the past, when only a small number of "channels" were available from broadcast TV stations, users could simply rotate a television dial to select a channel and watch a program. We introduce a simple interaction technique called "Gear", with which users can select an entry from a large hierarchical database and browse it instantly, just like we could select a channel and enjoy a program using old television dials.