Googleâs Project GlassÂ is still on track to arrive with developers âearly this year,â project leadÂ Babak Parviz insists, with the wearable computer still undergoing work to refine the hardware, boost battery life, and develop compelling apps. âThe feature set for the device is not set yet. It is still in flux,â Parviz toldÂ IEEE Spectrum, suggesting that Google still isnât willing to cite specific features beyond the photo/video capture and messaging already demonstrated.
âWe constantly try out new ideas of how this platform can be used. Thereâs a lot of experimentation going on at all times in Googleâ Parviz said of the development work. âWeâre also trying to make the platform more robust. This includes making the hardware more robust and the software more robust, so we can ship it to developers early this year.â
Part of that hardware work is to increase battery life, with Google still aiming for all-day longevity from the headset. Thatâs certainly ambitious, given the limitations alternative wearables from VuzixÂ and OlympusÂ demonstrate: there, continuous runtimes of around two hours are the maximum predicted, though Olympus has argued that, when used in periodic chunks, the battery in its system could last up to eight hours.
As for how wearers will interact with Glass, Parviz highlights the side-mounted trackpad that weâve already seen Google employees make good use of.Â âWe have also experimented a lot with using voice commandsâ the former augmented reality researcher says. âWe have full audio in and audio out, which is a nice, natural way of interacting with something that youâd wear and always have with you. We have also experimented with some head gestures.â Previous rumors suggested Google was using a bone-conduction system for private audio playback, inaudible to anybody but the wearer.
Hardware is only half the battle, however. Parviz argues that Glass is âan entirely new platformâ and, while conceding that it doesnât offer true augmented realityÂ in its first generation, requires a new angle on software and services. âWeâve taken pictures and done search and other things with this deviceâ he says, though it could also involve elements pared from Google Now.
âI think since our platform allows for very quick access to information â" if you need to have access to visual information, you almost instantly get it â" something like Google Now could be very compellingâ Babak Parviz, Google
For developers, though a full SDK for Glass is not yet available, there are a few hints as to what they can expect when coding for the headset. âWhen we ship this, we will have a cloud-based API that will allow developers to integrate with Glass, which enables a wide variety of Glass services while keeping a consistent user experienceâ Parviz confirms. âItâs the same API that we used to build the e-mail and calendar services that we test on Glass.â
With those APIs, developers will be able to deliver select data to a Glass user, rather thanÂ overwhelmingÂ them with all the information that might fit onto a typical smartphone screen. Instead, theyâll be able to pick out curated content â" specific types of email, Parviz suggests â" which would be shuttled to Glass and either displayed on the eyepiece or read out using text-to-speech, with spoken replies supported.
Though Sergey Brin has taken the spotlight with Google Glass more frequently, Parviz brings the technical background to the project. Before working at Google, he researched opto-electronic contact lensesÂ for use as wireless displays, complete with wireless power.