In this case I’d recommend teaming up with Fairphone, launching a SFOS-ID-line to keep sufficient jolla resources for OS-related development 
…
Unfortunately SFOS still is sailing with priority issues and shortcomings … 
As mentioned above already, I’d love to have a TOH which would make the phone a universal remote controller with infrared (IR), radio-frequency (RF)… That would be for audio-video devices but also for home automation with many protocols (zigbee ..etc …)
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Jolla doesn’t intend to produce all these TOHs. They just need to know what ideas people have so that they can put the right infrastructure in place.
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Priority #1 for me is audio out.
If this provides viable way of having a built-in 3.5mm jack, I am in, although I think it’s dubious whether pushing digital audio across I3C is likely to be feasible (depends on how good the controller in the SoC is, and it would definitely need the 10Mbps bandwidth option).
Given that adding a jack would leave almost all of the space in the other half unused, you could imagine a proper audio TOH. Separate in and out analog jacks. Preamp that would handle at least two external mics. Optical 3.5mm TOSLINK. Internal stereo speaker and stereo mics. MIDI on a jack. FM receiver and FM transmitter. Onboard DSP (because even with 10Mbps bandwidth you’re not going to be able to transport all of those channels in and out of the phone simultaneously to mix or encode them).
Alternatively it would be nice to have an “N900 upgrade pack” that brought back all of the features I used to enjoy 15 years ago and am now unable to buy at any price. 3.5mm jack, hardware keyboard, IR send and receive, FM radio and transmitter. (Better still, add some N900 missing pieces like that home automation RF interface.) That’s something I would pay more for - although clearly making something that has a mechanical element is a lot more difficult than something that’s just electronics.
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You forgot about the place to store the stylus and the kickstand.
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Not-that-practical outdoors or crafters ToH:
Cooperate with Finnish companies like Fiskars or Retki and incorporate something like this Multitool into the Other Half II (which in this case obviously would be orange, maybe even metal, and have the waffle structure of the grip.).
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Oh! Speaking about finish company, a collaboration with Ruuvi would be awesome 
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Amazing ideas from everyone! I finally first time read https://www.behance.net/gallery/27500387/TOHKBD-The-Other-Half-Keyboard-for-Jolla-Smartphone# TOHKBD and I must say that I would buy out-sliding keyboard TOH with this layout in a instant. Personally I know I would never have it when I would like to use it and if it fits to my pocket I don’t think I would need to take it off.
Another practical use case for me would be the camera addition as I always get complains from my other half (with iphone) that pictures I took look low quality… Also amazing if the camera addition TOH could fit to male jean pocket. Don’t need to be that comfortable there, but as I don’t want to hang it on my neck I would prefer putting it to my pocket when I need to put the phone away.
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a car mount with anything needed:
- power (so we did not break the USB-C port)
- physical button
- audio
- keyboard
- […]
(in my case I use it with PureMaps so anything that can help use it…)
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Very Nice that it will return
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A keyboard is what I need. I used all the Nokia Communicators, the Psion, some Blackberries, the Planet Gemini, the Unihertz Titan and Titan Pocket and now I am using a Moto Razr with a Clicks keyboard. I always wanted a Sailfish OS device but missed the keyboard. I am not the only one. -Here is a keyboard with a trackpad:
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I wanted to double chime ++ on this point. I make PCBs all the time. And I never make enclosures. I sell sandwich pcb products because everything else is too expensive. IE. need to develop injection molds and plan on making 100K units for it to pay off. So, yes to an ‘empty’ TOH. Please. Pretty please.
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This is basically what I’m working toward, though:
- Stereo Mic. Preamp max9880a (currently)
- Stereo In/Out max9880a (ditto 1).
- Midi in/out TRS, Korg style (ie. A, not B like arturia, though i like arturia gear). see 5.
- FM. hmmm. not likely. Buy my billow.
- DSP, beyond the DAC, probably a Pi Pico2 (2350b). That would provide the extra ADC for other stuff like cap sense, whatever. Add midi routing / processing here for laughs. Embed several MI synths and a sampler. Sky is Limit.
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QI-Charging will be a “must” for TOH.
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I’m not against going with the idea another time, but I already had some experience with Pine64’s approach of adding peripherals via a back cover. In particular, I had a keyboard, and it was, despite tall and tactile buttons, a bad experience, and such small keys probably can’t be made any better from the start…
I am not too interested in the current TOH ideas, but I’m open to being blown away in the future.
That being said, the mad scientist in me wanted to share some odd and probably pointless ideas:
Just designs
- Blank, various colours: Could print/stick any design on them
- Clear/transparent case: Clear winner of course
- “P#&kele” case: For the full Finnish experience
“Internal” hub
- More ports for setup-free convergence
- USB-C, mini-DP, SD? Audio jack would obviously be nice too
- Can’t be too comprehensive, pockets can’t house too much thickness
- Probably unrealistic, would have to piggyback the USB-C port for bandwidth
Projector
- Quickly beam something on a wall without worrying about cables
- Power munching TOH that’s probably way too ambitious
- Use case: If there’s 2 minutes left of a meeting and an entire presentation needs to be shown, but the laptop suddenly died
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This is a very hard battle. The mobile platforms are moving towards a means for proof of ID, proof of age, driving licence etc. and they want that to run on a “secure” OS, where they mean one that cannot be tampered with. This is antithetic to the SFOS philosophy. They want that a phone capable of running their app to be fully locked down, we want our phone open. There’s nothing in common.
I don’t think Jolla has a margin to negotiate with the EU to agree with a hackable platform for serious apps (government, banks). The EU is going to be happy that an EU company wants to enter the market, and will ask them to fill the same requirements as Android or iOS in terms of being fully locked down.
At best, Jolla maybe could make a double boot or some virtualization mechanism with a locked down core than can run in parallel an open SFOS and a locked down Android.
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Well, yes and no. The other day, I had to use the Official AussweisApp in Germany for a very complicated bit of identify me circus (to interact with several ministries at once). That app runs on linux. It would run on Sailfish if NFC would work for the Android layer. It’s a native linux and mac-os client and has ios and android versions. It’s built with QT, I believe. The system I’m running on has a custom kernel (some realtime patches, plus other low latency hacks for a custom audio driver).
I was able to do all identify me foo in as secure a way as is possible. With a network involved.
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Hello,
I wanna see a TOH as lens for camera, maybe changeable ones?
It will be nice to have a TOH with a very hard an adjustable vibration mode, good enough that you
hear it near a plain turbine. 
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