In those pictures you can also see some common tablet features like on-screen keyboards, video chat, maps, and even augmented reality.
All of the Nokia tablets came with a stylus but were mostly used with fingers. The stylus was handy for web browsing - for example, on the iPad I have to zoom HN quite a bit before I can reliably hit the up/down voting buttons.
At some point Nokia even introduced a feature where the UI elements would sense whether you're using stylus or finger, and would size themselves accordingly.
Incorrect. Once capacitive screens that could detect a finger were invented, they were immediately incorporated into tablet PCs. Many tablets incorporated an active digitizer underneath a resistive one, allowing both fingers and styli. As for a custom app-based OS, look no further than any tablet running Windows Mobile, like the HTC Shift X9500.
