Hannu, thanks for checking out the article!
"In Krisses previous TV-out article there were discussion about the bluetooth joystick available for S60. One possibility would be using Nintendo Wii controller with the phone. It uses bluetooth and there exists drivers for PC."
It's a really really really good idea, but the only PC demos I've seen had very limited functionality, they didn't have the pointer movement which is what we're after, they only had motion sensing. Some S60 models already have their own motion sensing support, as seen in the Nokia 5500...
Even if the drivers support pointers though, there would still be the question of the "sensor bar" (actually just two infrared lamps) which is what the Wii controller uses to determine its location. The bar would be a bit difficult to build yourself, and I don't think anyone seriously wants to put two candles on top of their TV (in fact they couldn't do that if it's a flat screen!).
"Another possibility is to use good old, often underestimated, N-Gage for a BT pad for N95! IMHO it has the best controller in any cell phone. Again, we need a driver for delivering key events over BT."
This is the exciting thing though: we don't actually need any new drivers if they make a bluetooth joypad that just uses the existing keyboard technology. That's why I'm so keen on such an accessory, it would be very very easy and cheap to create. The arrow keys on the keyboard work fine, it's just they're attached to the keyboard and they're big keys! 😊 If they could be turned into a direction pad they would be much more comfortable to use.
I wonder if there's any way to make the N95 think that the N-Gage is a bluetooth keyboard? That would turn it into a joypad, or of course someone could write a special application just like you suggest.
"What is also great is a possibility to play multiplayer games over BT. Piconet supports maxi 8 devices which is more than enough for emulators. E.g. in Frodo S60 multiplayer games were not supported for obvious reasons. But the support is there just waiting for few lines of code for enabling it!"
Yeah, BT multiplayer would be nice... I think some S60 1st / 2nd emulators supported it? It's odd that so many emus were made for S60 1st/2nd which never made the transition to 3rd Edition, perhaps the whole security lockdown thing killed them off.
Apart from BT multiplayer though, how about internet multiplayer? The website of the author of the non-C64 emulators in the article has a section on Symbian network play:
http://fms.komkon.org/EmuSymbian/
Go to the section that says Network Play Feature. (I didn't have the chance to try this, might have been interesting.)