The blogosphere is a buzz about the Nokia 3D touch patent. What I can't understand is how everyone can miss all the prior art in this area. I wrote about 3D mutli-touch solution provided by Stantum back in February. The difference, however, is the implementation technology and that may be the key. Stantum solution is a resistive screen modified to track multiple contacts. The Nokia solution appears to be a projected capacitance screen modified to detect pressure.
If it is a difference of touch screen technologies, than Nokia may be able to patent is exact implementation but there is no way they can patent pressure sensitive multi-touch in general. That's been done.
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